Notice who gave himself for our sins. The crucifixion of our Lord delivered both Jew and Gentile. It was also required for the offering of the Kingdom and the Grace gospel (Hebrews 9:15-17). Also, take a look at 1 John 2:2; 1John 4:10 and 1 Corinthians 15:3.
Notice that he might deliver us from this present evil world according to his will. This deliverance for the church will be realized in the rapture because we are not appointed to wrath. This can be seen in 1 Thessalonians 4:13-18 and 1 Thessalonians 5:9. If you are a Bible student, we will recognize that I left out 1 Corinthians 15:51-58. The reason I did that, at least for the moment, is that I am not totally convinced that that text is dealing with the Body of Christ and I need to study it more before I commit to it.
I believe that the Bible clearly teaches the rapture of the Body of Christ. Why? - Because, the Tribulation period is not for the church. We are not in view. It is about the nation of Israel, period.
Verses 6-7: I marvel that ye are so soon removed from him that called you into the grace of Christ unto another gospel: Which is not another; but there be some that trouble you, and would pervert the gospel of Christ. Notice Ye are so soon removed from him that called you. The question is who is the him in this verse? Some say that it is God (cf. NASB) while others say that it is Paul himself. The Greek simply says the one. The context, i.e., verse 9, dictates that it is referring to a man; most likely Paul himself, which means he would have been speaking in the third person.
In verse 7, there is a compare and contrast happening with the grace of Christ and another gospel. The gospel given to Paul was the grace of Christ or what he often referred to as his gospel (Romans 2:16; Romans 16:25; 1 Timothy 1:11; 2Timothy 2:8).
The other gospel was a perversion of that gospel that required works; i.e., no gospel (good news) at all. Paul also warned the Corinthians of this in 2 Corinthians 11:4. Sadly, the other gospel could not save them, and I believe that this other gospel was simply a mixing of the Kingdom and the Grace gospel that formed no gospel at all. They essentially cancel one another out.