Finally, know and never doubt the sovereign authority of Christ over all things. Remember that much of the heresies the church had to deal with in history were Trinitarian heresies. Much of them focused on Christ, either denying His humanity, or denying His deity. Therefore, hear God the Father's words in Matthew 17 "This is My beloved Son, in whom I am well pleased. Hear Him!", and truly listen to Him. Hear Jesus' declaration in Matthew 28 that all authority has been given to Him in Heaven and on earth, and then go and obey Him!