Called of God. Heb. 5: 4. Exod. 4: 14-16.
The Scriptures also teach that, for the ordinance to be effectual, it must be performed by one authorized to act in the name of the Lord; for "no man taketh this honor unto himself, but he that is called of God, as was Aaron." Aaron was called by the voice of God, through Moses.
Divine authority. Matt. 28: 19. Mark 3: 14. John 15: 16.
The Savior commanded His Apostles to "teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost." But He had given them the divine commission to act in His name wheresoever He should send them: "He ordained twelve, that they should be with Him, and that he might send them forth to preach." The divine authority which they possessed was the source of their power. This fact He impressed upon them, saying: "ye have not chosen me, but I have chosen you, and ordained you, that ye should go and bring forth fruit, and that your fruit should remain: that whatsoever ye shall ask of the Father in my name, he may give it you." If they had started out on their own authority without being chosen, God certainly would not have recognized ordinances performed by them in His name.
Imperfect baptism is not baptism. Acts 19: 11-16. Acts 19: 1-6.
The Apostle Paul, by the power of God, cast out evil spirits; but when the sons of Sceva, on whom the divine authority had not been conferred, attempted to do this, they met with failure. When the Apostle went to Ephesus, he found certain persons who claimed to have been baptized "unto John's baptism." Paul discerned that they had not received John's baptism, for they knew nothing of the Holy Ghost. Probably some unauthorized person—perhaps with good intent, but nevertheless without authority—had been along that way baptizing "unto John's baptism," but not with it, for that could only be done by a duly commissioned servant of God. After they received a proper understanding of the true ordinance they were baptized again, "and when Paul had laid his hands upon them, the Holy Ghost came on them; and they spake with tongues, and prophesied."
Go thou and do likewise.
The experience of the men of Ephesus affords an interesting lesson. They had been mistaken, but when the truth was presented to them they accepted it gladly. They received the Gospel ordinance, viz.: Baptism by immersion for the remission of sins, administered by one having divine authority; the burial in, and the birth from the watery element, without which ordinance the Lord has said that no man can enter the kingdom of heaven. "Enter ye in at the strait gate" that leads to life eternal.