Is doubt the enemy of faith? Is it a sin to doubt? Can doubt be a good thing? Is it okay for a Christian to doubt? Doubt can destroy us or it can lead us to deeper knowledge of God. Doubt can be the cause of anxiety or reliance on Jesus. To be sure, every human being that has ever walked the face of the earth has struggled through doubt, but Jesus, the author and perfector of our faith gives us good reason to lean into Him when we doubt.