The resurrection power of Jesus broke Satan's captive power. When He led the Old Testament saints from paradise to heaven, He led captivity captive!
The Bible was the only book Jesus ever quoted, and then never as a basis for discussion but to decide the point at issue.
It is the way of grace. People do not merit salvation but receive it as a free gift from God on the basis of what Christ's death accomplished.
The same power that brought Christ back from the dead is operative within those who are Christ's. The Resurrection is an ongoing thing.
You can drift into sin, but not into righteousness. 