In Corinthians, he is talking to Christians right? What happen then to the person in I Corinthinas Chapter 5? The person who is a fornicator/adulterer? If he will not repent is he saved?
He is talking to the church here in Corinth not necessarily all Christians. As we all know it is possible for some to attend church all their lives and still not be saved. In this situation there were people of influence that were telling the Christians that it was ok to continue in their sins without regard to the teachings of Christ and without feeling any convictions for doing so.
In Galatians, he is talking also tho Christains right? What does verse one means?
Which verse 1 do you mean here, there are 6 chapters? Chapter 5? That is the chapter in which Paul specifically mentions fornication. We have the statement in this verse of "liberty wherewith Christ hath made us free, and be not entangled again with the yoke of bondage." This is saying that we are not under the law (bondage), it does not mean that we are to take all liberties and sin as we desire. When a person is saved such things will be known to us as wrong and we should do all we can to attempt not to do them. It does not mean that if we have a moment of weakness that we will be condemned to death.
In both of these situations Paul was talking about individuals that did not want to change nor try to follow God. By not trying to follow in the Steps of Jesus they were rejecting him right from the very start. If we truly love Jesus we will attempt to do what is right.
1Jo 3:18 My little children, let us not love in word, neither in tongue; but in deed and in truth.
1Jo 3:19 And hereby we know that we are of the truth, and shall assure our hearts before him.
1Jo 3:20 For if our heart condemn us, God is greater than our heart, and knoweth all things.
1Jo 3:21 Beloved, if our heart condemn us not, then have we confidence toward God.
Joh 3:21 But he that doeth truth cometh to the light, that his deeds may be made manifest, that they are wrought in God.