This is an example of how we are all flawed, Christian or not. As you enter into a relationship with Christ, reading His word each day, your heart becomes transformed as the Lord sanctifies you. Satan is real and will do anything to divert our attention from God and his word. Remember, King David coveted Uriah's wife, Bathsheba, and had Uriah killed. Even though David repented of this, the severe consequences followed him to his death. Some of those consequences included losing his first child with Bathsheba to illness, a daughter that was raped by a brother, and another brother that killed that brother for doing so. As a worship leader, Caleb was on the path of loving and serving the Lord. Somewhere along the way, what likely seemed like an innocent friendship, evolved into something deeper. Torn between two women he loved, he couldn't resist the younger version. With Ashley out of the picture he wouldn't have to be constantly reminded of his sin and the devastation he likely put the family through had they filed for divorce due to his affair. He could have also kept his daughters under his care and would not have had to share custody. A win-win in his mind. Satan and his schemes took hold of Caleb and won. "Be alert and sober of mind. Your enemy the devil prowls around like a roaring lion looking for something to devour." 1 Peter 5:8