power of sin on Sanctification

Nearly everybody knows of at least one sin habit in their life that they wish to leave behind them. Yet, no matter what they do, it seems impossible for them to be free of this habit, character flaw, ...

As we try to live a life in obedience to God, the stubbornness of our sins can discourage and frighten us. If we are supposed to have a new heart, why are we still so broken? C.S. Lewis struggled with...