Combatting Persistent Sin

Looking at Genesis 20, we can't help but notice that Abraham seems to be falling back into old patterns of sin. Sadly, this is true for many believers today as well. We have repented of our sin, we hate our sin...and yet we continue to fall back into old patterns of sin. So, how do we combat persistent sin in our life? How do we rid our lives, once and for all, of those nagging sins? Let's look at Genesis 20 and see what lessons we can learn.