2 Corinthians 7:10, But godly sorrow worketh repentance unto salvation not to be repented of: but the sorrow of the world worketh death.
What is godly sorrow? Well, actually, it's something like this: Matthew 3:6.
But does godly sorrow save a man? No. Why? Because a man must believe on Christ to be saved (Acts of the Apostles 16:31). What does godly sorrow have to do with repentance, then? Well, it causes us to understand and accept our condition of sin and hopelessness (Romans 3:23, Ephesians 2:12), which leads us to receive Christ by faith, becoming a son of God through the Son of God, giving us a seal of inheritance (John 1:12, Ephesians 1:13). Why is it repentance unto salvation not to be repented of? Because we're sealed, and will never experience death in the fact that our salvation is not to be repented of (Ephesians 1:13, Ephesians 4:30) even though we still sin and can thereby grieve the Holy Spirit by doing so. Why do we grieve the Spirit? Because no one can say they've made their heart pure from sin (Proverbs 20:9). The sorrow of the world is something like being sad that you couldn't get the video game that you wanted. I could provide a biblical example, but I'm sure you get the idea with this one.
Acts of the Apostles 2:38, Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost.
Check out Acts of the Apostles 2:21, where Peter already tells them what they must do to be saved. It lines up with Romans 10:9-13 and Acts of the Apostles 16:31. Acts of the Apostles 2:38 is merely a response to being saved, not action taken to receive salvation. This also lines up with Acts of the Apostles 10:44-48, because only after the Gentiles believe did they get baptized and receive the Holy Ghost. But notice here in this passage they received the Holy Ghost (the seal talked about in Ephesians 1:13) before they even got baptized.
Acts of the Apostles 3:19, Repent ye therefore, and be converted, that your sins may be blotted out, when the times of refreshing shall come from the presence of the Lord:
"Repent ye therefore, and be converted,"
I mean this one is pretty obvious - they are converted unto Christianity, meaning they called upon the name of the Lord (Romans 10:13). They repented from disbelief, and believed the Gospel, as described in Mark 1:15.
Acts of the Apostles 17:30, And the times of this ignorance God winked at; but now commandeth all men everywhere to repent.
What's the condition of repentance in this passage? Read the full passage and understand the context, friend.
Acts of the Apostles 17:30-34, in verse 34, saying, "Howbeit certain men clave unto him, and believed:" They listened to the instruction of Paul in verse 30 and repented from disbelief and believed the Gospel, like in Mark 1:15.
Acts of the Apostles 20:21, Testifying both to the Jews, and also to the Greeks, repentance toward God, and faith toward our Lord Jesus Christ.
I mean, this one's obvious too. It's a compound declaration, which is simply the latter clause being a clarification of the former clause (if you study language structure).
"Repentance toward God" = "Faith toward our Lord Jesus Christ." What is repentance toward God? He clarifies in the same sentence by saying it is faith toward our Lord Jesus Christ.
One could interpret it as saying repentance of sin, but that's adding to scripture, and the context only allows for the interpretation of repentance from lack of faith, because those are the words given.
Acts of the Apostles 26:20, But shewed first unto them of Damascus, and at Jerusalem, and throughout all the coasts of Judea, and then to the Gentiles, that they should repent and turn to God, and do works meet for repentance.
This is a good quote friend, as it can definitely be interpreted as works-salvation without any other context. However, it is not speaking of works salvation: at most, it's speaking of good works that we are created unto when we become Christians (Ephesians 2:10), not the works we do to become saved, which Ephesians 2:8-9 rejects the idea of.
How do we know?
Because in a verse above verse 20, in the latter half, it says, "that they may receive forgiveness of sins, and inheritance among them which are sanctified by faith that is in me." What is the condition for forgiveness of sins and inheritance? Faith in Christ. So in the following verses, when it speaks of turning to God, what is it referring to? Faith in Christ. Are works then something that must follow after this? Well, no. How do we know? Acts of the Apostles 26:20b: "that they SHOULD repent and turn to God, AND do works meet for repentance." We know that this is what they should do, but what MUST one do to be saved? Acts of the Apostles 16:30-31, "Believe on the Lord Jesus Christ and thou shalt be saved, and thy house."
Use of lingual articles and auxiliary verbs are key my friend.
Matthew 7:23, And then will I profess unto them, I never knew you: depart from me, ye that work iniquity.
Actually, the men talked about in this verse did wonderful works. We know this by the passage in verse 22. Matthew 7:21-23 "Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven (Keep in mind that this is the reason for justification AND condemnation whether a person does the will of God to be justified, or doesn't do the will of God respectively). Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works? And then will I profess unto them, I never knew you: depart from me, ye that work iniquity."
But they were condemned despite doing wonderful works, because they did not the will of the Father, which was to know Jesus.
John 6:40 "And this is the will of him that sent me, that every one which seeth the Son, and believeth on him, may have everlasting life: and I will raise him up at the last day."
So what's the will of the Father? To believe on the Son.
Philippians 3:9-10 "And be found in him (in Christ), not having mine own righteousness, which is of the law, but that which is through the faith of Christ, the righteousness which is of God by faith: that I may know him, and the power of his resurrection, and the fellowship of his sufferings, being made conformable unto his death;"
So how do we come to know Christ? By faith, by believing on him, which is obeying the will of the Father in John 6:40. Those men in Matthew 7:21-23 didn't believe on him, nor have faith - in fact, these are the people that tried to do the impossible task John the Baptist set forth for them to bring forth fruits worthy of repentance of God's wrath, but they couldn't, because no man can be justified by works (Titus 3:5). They didn't have the righteousness of Christ.
Matthew 13:41-42, The Son of man shall send forth his angels, and they shall gather out of his kingdom all things that offend, and them which do iniquity: And shall cast them into the furnace of fire: there shall be waling and gnashing of teeth.
Again, this is the description of those who do works to be saved - all our righteousness' are as filthy rags before God (Isaiah 64:6), and if we do works but do not have Christ, our works are but filth toward God because we do not have Christ's righteousness, even if they are the wonderful works of Matthew 7:22.
Matthew 13:49-50, So shall it be at the end of the world: the angels shall come forth, and sever the wicked from among the just: And shall cast them into the furnace of fire: there shall be wailing and gnashing of teeth.
The wicked are simply those that aren't saved, who do not believe, neither know Christ - like those workers of wonderful iniquity, who did not have the seal of God - they all will likewise perish.. why? Because they did not repent and believe on Christ like he said to do in Luke 13:5.
1 Thessalonians 5:23-24, And the very God of peace sanctify you wholly: and I pray God your whole spirit and soul and body be preserved blameless unto the coming of our Lord Jesus Christ. Faithful is he that calleth you, who also will do it.
This is simply a promise that God will provide his salvation to us when he comes to those who are saved, which actually backs up once saved, always saved.
Hebrews 10:10,14, By the which will we are sanctified through the offering of the body of Jesus Christ once for all....For by one offering he hath perfected for ever them that are sanctified.
Jesus Christ is our righteousness.
1 John 3:8-9, He that committeth sin is of the devil: for the devil sinneth from the beginning. For this purpose the Son of God was manifested, that he might destroy the works of the devil. Whosoever is born of God doth not commit sin; for his seed remaineth in him: and he cannot sin, because he is born of God.
So, are you saying the Bible contradicts itself in 1 John 1:8 and 1 John 1:10, or Proverbs 20:9, or Ecclesiastes 7:20? Cause I say it doesn't.
We must compare scripture with scripture, friend. How are we without sin if we're saved, but still in sin while saved? Well, this must be talking about the unforgivable sin, which is that which cannot be saved - the reason why is because it says he cannot commit sin, because he is born of God. Paul still sinned after he was saved after all, so we know this can't mean what you think it means.
John 16:8-9 "And when he is come (the Spirit), he will reprove the world of sin, and of righteousness, and of judgement: Of sin, because they believe not on me;" So what's the sin being corrected her? The sin of unbelief, and that's the only sin indicated that is corrected. Why? Because all other sin is known through the law of God, which we are not justified by (Romans 3:20).
The unforgivable sin is the sin of blasphemy of the Spirit, which is unbelief of it's witness of Christ. When we don't believe, we blaspheme the Spirit by calling God a liar (1 John 5:10).
Therefore, the unforgivable sin is not committable unto those that are saved. Why? Because once you believe, you are born of God (1 John 5:1), making you sealed with the Ghost (Ephesians 1:13), reproved of the sin of unbelief (John 16:8-9), and forever quickened by the Spirit (Ephesians 2:1, Romans 8:10-11) as a son of God (John 1:12); even though we still serve the law of sin in our members, we serve the law of God in our mind, soul, and spirit (Romans 7:25).
1 John 3:6, 1 John 2:17, Whosoever abideth in him sinneth not: whosoever sinneth hath not seen him, neither known him....And the world passeth away, and the lust thereof: but he that doeth the will of God abideth for ever.
We already discussed how we come to know Christ and that the will of God is to believe on the Lord Jesus Christ.
I hope I helped, brother.