Leviticus 12:4

And she will be unclean for thirty-three days till the flow of her blood is stopped; no holy thing may be touched by her, and she may not come into the holy place, till the days for making her clean are ended.

Leviticus 15:25-28

And if a woman has a flow of blood for a long time, not at the time when she generally has it, or if the flow goes on longer than the normal time, she will be unclean while the flow of blood goes on, as she is at other normal times.

Haggai 2:13

Then Haggai said, Will any of these be made unclean by the touch of one who is unclean through touching a dead body? And the priests answering said, It will be made unclean.

Luke 2:22-23

And when the necessary days for making them clean by the law of Moses had come to an end, they took him to Jerusalem to give him to the Lord

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