Cyprian

Moses was often scorned by an ungrateful and faithless people and almost stoned, and yet with mildness and patience he prayed to the Lord in their behalf.

Thus Korah, Dathan and Abiram, who tried to assume for themselves in opposition to Moses and Aaron the freedom to sacrifice, immediately paid the penalty for their efforts. The earth, breaking its bonds, opened up into a deep chasm, and the opening of the receding ground swallowed up the standing and the living. And not only did the anger of the indignant God strike those who had been the authors [of the revolt], but also fire that went out from the Lord in speedy revenge consumed 250 others, participants and sharers in the same madness, who had been joined together with them in the daring plan. Clearly [this] warned and showed that whatever the wicked attempt by human will to destroy God’s plan is done against God.

But that they are said to have the same God the Father as we, to know the same Christ the Son, the same Holy Spirit, can be of no avail to such as these. For even Korah, Dathan, and Abiram knew the same God as did the priest Aaron and Moses. Living under the same law and religion, they invoke the one and true God, who was to be invoked and worshipped; yet, because they transgressed the ministry of their office in opposition to Aaron the priest, who bad received the legitimate priesthood by the condescension of God and the ordination of the Lord, and claimed to themselves the power of sacrificing, divinely stricken, they immediately suffered punishment for their unlawful endeavours; and sacrifices offered irreligiously and lawlessly, contrary to the right of divine appointment, could not be accepted, nor profit them.

We find that also made clear in Numbers when Korah and Dathan and Abiram claimed for themselves the liberty of sacrificing in opposition to Aaron the priest. There also the Lord teaches through Moses that the people should be separated from them lest they be bound by the same guilt with the criminals and contaminate themselves by the same crime. “Keep away,” he says, “from the tents of most shameless wicked men, and do not touch anything that is theirs, lest you perish at the same time in their sin.” Because of this, a people who obey the precepts of the Lord and fear God ought to separate themselves from a sinful leader and should not take part in the sacrifices of a sacrilegious bishop, especially since they themselves have the power either of electing worthy bishops or of refusing the unworthy.

And again: "The water of sprinkling is a purification." Whence it appears that the sprinkling also of water prevails equally with the washing of salvation; and that when this is done in the Church, where the faith both of receiver and giver is sound, all things hold and may be consummated and perfected by the majesty of the Lord and by the truth of faith.