"Know ye not, that so many of us as were baptized into Jesus Christ were baptized into his death? Therefore we are buried with him by baptism into death: that like as Christ was raised up from the dead by the glory of the Father, even so we also should walk in newness of life."—Romans 6:3-4
Paul does not say that if unworthy persons, such as unbelievers, and hypocrites, and deceivers, are baptized they are baptized into our Lord's death. He says "so many of us," putting himself with the rest of the children of God. He intends such as are entitled to baptism, and come to it with their hearts in a right state. Of them he says, "Know ye not, that so many of us as were baptized into Jesus Christ were baptized into his death?" He does not even intend to say that those who were rightly baptized have all of them entered into the fullness of its spiritual meaning; for if they had, there would have been no need of the question, "Know ye not?" It would seem that some had been baptized who did not clearly know the meaning of their own baptism. They had faith, and a glimmer of knowledge sufficient to make them right recipients of baptism, but they were not well instructed in the teaching of baptism; perhaps they saw in it only a washing, but had never discerned the burial.
Baptism as a burial with Christ signifies, first, acceptance of the death and burial of Christ as being for us. What other hope have we? When our divine Lord came down from the heights of glory and took upon himself our manhood, he became one with you and with me; and being found in fashion as a man, it pleased the Father to lay sin upon him, even your sins and mine. Do you not accept that truth, and agree that the Lord Jesus should be the bearer of your guilt, and stand for you in the sight of God? He went up to the tree loaded with all this guilt, and there he suffered in our stead as we ought to have suffered. It pleased the Father, instead of bruising us, to bruise him. He put him to grief, making his soul an offering for sin. Do we not gladly accept Jesus as our substitute? Whether you have been baptized in water or not, I put this question to you, "Do you accept the Lord Jesus as your surety and substitute?" For if you do not, you shall bear your own guilt and carry your own sorrow, and stand in your own place beneath the angry justice of God.
"Then said he to the multitude that came forth to be baptized of him, O generation of vipers, who hath warned you to flee from the wrath to come? Bring forth therefore fruits worthy of repentance, and begin not to say within yourselves, We have Abraham to our father: for I say unto you, That God is able of these stones to raise up children unto Abraham. And now also the axe is laid unto the root of the trees: every tree therefore which bringeth not forth good fruit is hewn down, and cast into the fire." Luke 3:7-9
"The Pharisees were very strict in regard to the outward observance of forms and customs, and were filled with haughty, worldly, hypocritical self-righteousness. The Sadducees denied the resurrection of the dead and the existence of angels, and were skeptical in regard to God. This sect was largely composed of unworthy characters, many of whom were licentious in their habits. By the word “vipers” John meant those who were malignant and antagonistic, bitterly opposed to the expressed will of God.
John exhorted these men to “bring forth therefore fruits meet for repentance.” That is, Show that you are converted, that your characters are transformed.... Neither words nor profession, but fruits—the forsaking of sins, and obedience to the commandments of God—show the reality of genuine repentance and true conversion" (Manuscript 112, 1901). {5BC 1077.5}
Not all that came to John the Baptist desiring baptism were baptized. John refused to baptize any and all that came forth for baptism who were not worthy. As a condition of receiving baptism, he required that they produce fruit of the Spirit as evidence of conversion. Perhaps today we are not as strict as the Greatest Prophet and more tolerant and willing to overlook sin?