Having faith is very important, but God asked us to obey Him, which is why there are so much scripture on keeping (obeying) God's commandments in both the Old and New Testaments. We are saved by grace (God's gift to give or not) though our faith, if we have a changed heart, we obey His commandments because they are written in our hearts and we obey out of our great love for our Savior because He asked us to obey and His commandments are not burdensome. We are told James 1:22 But be doers of the word, and not hearers only, deceiving yourselves.
I think its important to let Jesus answer how we can enter into life. You will have to disagree with Him because they are His own Words...
Matthew 19:17 So He said to him, “Why do you call Me good? No one is good but One, that is, God. But if you want to enter into life, keep the commandments.”
Mathew 7:22 “Not everyone who says to Me, ‘Lord, Lord,’ shall enter the kingdom of heaven, but he who does the will of My Father in heaven.
Mathew 5:19
Whoever therefore breaks one of the least of these commandments, and teaches men so, shall be called least in the kingdom of heaven; but whoever does and teaches them, he shall be called great in the kingdom of heaven.
Mathew 7:23 And then I will declare to them, ‘I never knew you; depart from Me, you who practice lawlessness!’
Mathew 13:41
The Son of Man will send out His angels, and they will gather out of His kingdom all things that offend, and those who practice lawlessness,
Mathew 15:9 And in vain they worship Me, Teaching as doctrines the commandments of men.’ ”
Mathew 22:40 On these two commandments hang all the Law and the Prophets.”
Mathew 23:28 Even so you also outwardly appear righteous to men, but inside you are full of hypocrisy and lawlessness.
Mathew 24:12 And because lawlessness will abound, the love of many will grow cold.
Mark 10:19 You know the commandments: ‘Do not commit adultery,’ ‘Do not murder,’ ‘Do not steal,’ ‘Do not bear false witness,’ ‘Do not defraud,’ ‘Honor your father and your mother.’
1 John 3:4 Whoever commits sin also commits lawlessness, and sin is lawlessness.
John 14:15 “If you love Me, keep My commandments.
John 14:21 He who has My commandments and keeps them, it is he who loves Me. And he who loves Me will be loved by My Father, and I will love him and manifest Myself to him.”
John 15:10 If you keep My commandments, you will abide in My love, just as I have kept My Father’s commandments and abide in His love.
1 Thessalonians 4:1-3,4 Finally then, brethren, we urge and exhort in the Lord Jesus that you should abound more and more, just as you received from us how you ought to walk and to please God; 2 for you know what commandments we gave you through the Lord Jesus.
1 John 2:3 Now by this we know that we know Him, if we keep His commandments.
1 John 2:4 He who says, “I know Him,” and does not keep His commandments, is a liar, and the truth is not in him.
1 John 3:22 And whatever we ask we receive from Him, because we keep His commandments and do those things that are pleasing in His sight.
1 John 3:24 Now he who keeps His commandments abides in Him, and He in him. And by this we know that He abides in us, by the Spirit whom He has given us.
1 John 5:2
By this we know that we love the children of God, when we love God and keep His commandments.
1 John 5:3 For this is the love of God, that we keep His commandments. And His commandments are not burdensome.
2 John 1:6 This is love, that we walk according to His commandments. This is the commandment, that as you have heard from the beginning, you should walk in it.
Revelations 12:17 And the dragon was enraged with the woman, and he went to make war with the rest of her offspring, who keep the commandments of God and have the testimony of Jesus Christ.
Revelations 14:12 Here is the patience of the saints; here are those who keep the commandments of God and the faith of Jesus.
Revelations 22:14 Blessed are those who do His commandments, that they may have the right to the tree of life, and may enter through the gates into the city.