If you have established to your satisfaction that God exists then you have established that this Supreme Being is worthy of worship. Fie theodicy! The particular form of that worship may be suggested to you by your culture and the practice of the sages and saints that have your respect. However the move from a satisfactory demonstration of the bare existence of God to the exclusive truth of some form of religious belief e.g. Christianity, Islam, is not legitimate. I’m not sure that anyone has ever held this.