Jesus, "being made perfect, he became the source of eternal salvation to all who obey him." Those who don't "obey Jesus" don't know a thing.
31 He who comes from above is above all. He who is of the earth belongs to the earth and speaks in an earthly way. He who comes from heaven is above all. 32 He bears witness to what he has seen and heard, yet no one receives his testimony. 33 Whoever receives his testimony sets his seal to this, that God is true. 34 For he whom God has sent utters the words of God, for he gives the Spirit without measure. 35 The Father loves the Son and has given all things into his hand. 36 Whoever believes in the Son has eternal life; whoever does not obey the Son shall not see life, but the wrath of God remains on him. John 3:31-36
This obedience to Jesus is not by following the Law of Mosses...
17 For the law was given through Moses; grace and truth came through Jesus Christ. John 1:17
Who do you want to believe? Do you want to believe those who came thousands of years later or believe those who wrote the New Testament?
In order for anyone to truly get the truth from the Bible or the truth about Jesus and salvation, you first need to believe that the Apostles, though imperfect, didn't lie even to the point it led to their death (Even John's death isolated and imprisoned on an island), just like Jesus believed God to the death (And not by his own hands). You have to believe that the writers of the New Testament only spoke the truth, and Paul put's this fact this way ...
16 When one turns to the Lord, the veil is removed. 17 Now the Lord is the Spirit, and where the Spirit of the Lord is, there is freedom. 18 And we all, with unveiled face, beholding the glory of the Lord, are being transformed into the same image from one degree of glory to another. For this comes from the Lord who is the Spirit.
1 Therefore, having this ministry by the mercy of God, we do not lose heart. 2 But we have renounced disgraceful, underhanded ways. We refuse to practice cunning or to tamper with God's word, but by the open statement of the truth we would commend ourselves to everyone's conscience in the sight of God. 3 And even if our gospel is veiled, it is veiled to those who are perishing. 4 In their case the god of this world has blinded the minds of the unbelievers, to keep them from seeing the light of the gospel of the glory of Christ, who is the image of God. 5 For what we proclaim is not ourselves, but Jesus Christ as Lord, with ourselves as your servants for Jesus' sake. 6 For God, who said, “Let light shine out of darkness,” has shone in our hearts to give the light of the knowledge of the glory of God in the face of Jesus Christ. (2 Corinthians 3:16-18 & 2 Corinthians 4: 1-6 as one complete thought in context)
"For what we proclaim is not ourselves, but Jesus Christ as Lord, with ourselves as your servants for Jesus' sake."
The writers of the New Testament believed Jesus to be God with all rule and authority and Paul said it this way when writing to Timothy
Teach and urge these things. 3 If anyone teaches a different doctrine and does not agree with the sound words of our Lord Jesus Christ and the teaching that accords with godliness, 4 he is puffed up with conceit and understands nothing. (1 Timothy 6:3-4)
Jesus has the final and completer say to all truth and the apostles all believe this fact. The writer of the Book of Acts wrote Peter saying...
11 This Jesus is the stone that was rejected by you, the builders, which has become the cornerstone. 12 And there is salvation in no one else, for there is no other name under heaven given among men by which we must be saved.” (Acts 4:11-12)
And this is how Paul explain this fact to the Colossians...
8 See to it that no one takes you captive by philosophy and empty deceit, according to human tradition, according to the elemental spirits of the world, and not according to Christ. 9 For in him the whole fullness of deity dwells bodily, 10 and you have been filled in him, who is the head of all rule and authority. 11 In him also you were circumcised with a circumcision made without hands, by putting off the body of the flesh, by the circumcision of Christ (Colossians 2: 8-11)
John wrote...
6 We are from God. Whoever knows God listens to us; whoever is not from God does not listen to us. By this we know the Spirit of truth and the spirit of error. (1 John 4:6)
John also wrote (Easy to Read Translation) ...
9 Everyone must continue to follow only the teaching about Christ. Whoever changes that teaching does not have God. But whoever continues to follow the teaching about Christ has both the Father and his Son. 10 Don’t accept those who come to you but do not bring this teaching. Don’t invite them into your house. Don’t welcome them in any way. 11 If you do, you are helping them with their evil work. (2 John 1:9-11)
What this means is that truth starts and ends within the Words of Jesus Christ whereas all the writers of the New Testament believed this fact not even teaching beyond this fact. Paul Himself writing about this fact...
1 I, Paul, am begging you with the gentleness and the kindness of Christ. Some say that I am bold when I am writing you from a distance, but not when I am there with you. 2 They think our motives for what we do are like those of the world. I plan to be very bold against those people when I come. I hope I will not need to use that same boldness with you. 3 We live in this world, but we don’t fight our battles in the same way the world does. 4 The weapons we use are not human ones. Our weapons have power from God and can destroy the enemy’s strong places. We destroy people’s arguments, 5 and we tear down every proud idea that raises itself against the knowledge of God. We also capture every thought and make it give up and obey Christ. 6 We are ready to punish anyone there who does not obey, but first we want you to be fully obedient. 2 Corinthians 10:1-6
Until this obedience is met, everyone who doesn't meet at least the belief of this fact, do not know where they are going. With that said ...
What People Do Shows What They Are
15 “Be careful of false prophets. They come to you and look gentle like sheep. But they are really dangerous like wolves. 16 You will know these people because of what they do. Good things don’t come from people who are bad, just as grapes don’t come from thornbushes, and figs don’t come from thorny weeds. 17 In the same way, every good tree produces good fruit, and bad trees produce bad fruit. 18 A good tree cannot produce bad fruit, and a bad tree cannot produce good fruit. 19 Every tree that does not produce good fruit is cut down and thrown into the fire. 20 You will know these false people by what they do.
21 “Not everyone who calls me Lord will enter God’s kingdom. The only people who will enter are those who do what my Father in heaven wants. 22 On that last Day many will call me Lord. They will say, ‘Lord, Lord, by the power of your name we spoke for God. And by your name we forced out demons and did many miracles.’ 23 Then I will tell those people clearly, ‘Get away from me, you people who do wrong. I never knew you.’
Two Kinds of People
24 “Whoever hears these teachings of mine and obeys them is like a wise man who built his house on rock. 25 It rained hard, the floods came, and the winds blew and beat against that house. But it did not fall because it was built on rock.
26 “Whoever hears these teachings of mine and does not obey them is like a foolish man who built his house on sand. 27 It rained hard, the floods came, and the winds blew and beat against that house. And it fell with a loud crash.” Matthew 7:15-27
Did you notice that the two kinds of people? One is who follows Jesus by doing what He says, and the other is that false prophet who solely believes in doing what they think they should do instead of obey Jesus!
I personally would love to answer all your questions, but I would rather you were saved through Jesus' words and teachings which includes the words of the Apostles. I have heard every type of argument pertaining to Salvation and ALL OF THESE AREGUMENTS GO BEYOND THE WORDS OF JESUS'. When you follow Jesus, you will learn EVERYTHING YOU NEED TO KNOW about salvation and how it works. Within the above verses (Matthew 7: 24) you should be able to see your questioned answered.
The New Testament should be taken grammatically and doctrinally and those who don't believe this fact it is because "the god of this world has blinded them," and this is the doctrinal truth and the grace of God...
the Good News
34 So Peter opened his mouth and said: “Truly I understand that God shows no partiality, 35 but in every nation anyone who fears him and does what is right is acceptable to him.
36 As for the word that he sent to Israel, preaching good news of peace through Jesus Christ (he is Lord of all), 37 you yourselves know what happened throughout all Judea, beginning from Galilee after the baptism that John proclaimed: 38 how God anointed Jesus of Nazareth with the Holy Spirit and with power. He went about doing good and healing all who were oppressed by the devil, for God was with him. 39 And we are witnesses of all that he did both in the country of the Jews and in Jerusalem. They put him to death by hanging him on a tree, 40 but God raised him on the third day and made him to appear, 41 not to all the people but to us who had been chosen by God as witnesses, who ate and drank with him after he rose from the dead. 42 And he commanded us to preach to the people and to testify that he is the one appointed by God to be judge of the living and the dead. 43 To him all the prophets bear witness that everyone who believes in him receives forgiveness of sins through his name.” (Acts 10:34-43)
18 God foretold by the mouth of all the prophets, that his Christ would suffer, he thus fulfilled. 19 Repent therefore, and turn back, that your sins may be blotted out, 20 that times of refreshing may come from the presence of the Lord, and that he may send the Christ appointed for you, Jesus, 21 whom heaven must receive until the time for restoring all the things about which God spoke by the mouth of his holy prophets long ago.
22 Moses said, ‘The Lord God will raise up for you a prophet like me from your brothers. You shall listen to him in whatever he tells you. 23 And it shall be that every soul who does not listen to that prophet shall be destroyed from the people.’ 24 And all the prophets who have spoken, from Samuel and those who came after him, also proclaimed these days. 25 You are the sons of the prophets and of the covenant that God made with your fathers, saying to Abraham, ‘And in your offspring shall all the families of the earth be blessed.’ 26 God, having raised up his servant, sent him to you first, to bless you by turning every one of you from your wickedness.” Act 3:18-26
30 The God of our fathers raised Jesus, whom you killed by hanging him on a tree. 31 God exalted him at his right hand as Leader and Savior, to give repentance to Israel and forgiveness of sins. 32 And we are witnesses to these things, and so is the Holy Spirit, whom God has given to those who obey him.” Acts 5:30-32
7 In the days of his flesh, Jesus offered up prayers and supplications, with loud cries and tears, to him who was able to save him from death, and he was heard because of his reverence. 8 Although he was a son, he learned obedience through what he suffered. 9 And being made perfect, he became the source of eternal salvation to all who obey him, 10 being designated by God a high priest after the order of Melchizedek. (Hebrews 5:7-10)