The only true authority is the Word of God.
If it is priesthood, it is received by his word. If it is calling on the name of Yeshua, he also is the Word of God. If it be spoken by the Holy Spirit, that carries his word. If it is on the authority of scripture you stand, that is also his word. If it is by his revelations to you that truth you declare, that is no more nor less than the authority of his word. If in eons distant, or eons past, worlds are created, and populaces to fill them, all this is done by his word.
His word is his authority, his power, his wisdom, his love. All truth is dependent on his word. His word is eternal. His word is truth. If your claims are not supported on the word of God, they are but sounding brass and tinkling cymbals. They are obnoxious noises, which bring neither light, nor truth, nor grace.
His word is the foundation, the ladder, the standard, and our hope. His word is who he is. Know his word and you will know him. Trust in his word. It alone is the iron rod which will lead you to him.