It is exactly because Jesus provides us with the greatest example of faith that this flea of doubt must be present and nipping at his love for God. It has been well said, a faith that does not doubt is a dead faith. The mark of great faith is a great and continuous struggle to get it, keep it, share it. The early church found power and comfort in the image of a doubt-riddled Jesus praying in the Gethsemane Garden for the cup to pass from him. One of the ancient church's legends teaches that doubt increases in power as saints of God increase in saintliness.
True doubts grow naturally out of true faith.
God, the focus of our faithfulness, can never be unequivocally proved. Certainty, not doubt, is the cornerstone of atheists everywhere. Immanuel Kant warned that doubt is a place of rest, not a place of residence. Doubt calls us to action, not just to agitation. There is a difference between doubting and disenchantment, between wrestling with faith and flinging faith to the winds.