You have a right to disagree with the Bible, but don't distort what it says. What Paul wrote is as much a part of the Bible as the rest of it, Old and New Testament, and doesn't disagree with any of it when you understand it all as a coordinated whole, and not by picking verses here and there out of context. Jesus clearly did not teach that we are saved by following the law (Google "Matthew 5:18 commentary" if that's one verse you're getting at, https://www.gci.org/bible/matthew517 for example); we get right with God, forgiven, through faith in Christ's finished work on the cross that paid the price for our sins, but, genuine saving faith will have as part of it a conviction of the ugliness of our sin and the need to turn away from it - repentance (required by God; you can't ask for forgiveness and then continue doing those very same things), and Christ's lordship, without which we can't live a life pleasing to God. A right heart with God also will result in an outflow of good works.