Leviticus 15:24

Female Bodily Discharges

²³ And if it be on her bed, or on any thing on which she sitteth, when he toucheth it, he shall be unclean until the evening. ²⁴ And if any man shall lie with her at all, and her flowers be upon him, he shall be unclean seven days: and all the bed on which he lieth shall be unclean. ²⁵ And if a woman shall have an issue of her blood many days out of the time of her separation, or if it shall run beyond the time of her separation; all the days of the issue of her uncleanness shall be as the days of her separation: she shall be unclean.

Sexual Relations

Leviticus 20:18

And if a man shall lie with a woman having her sickness, and shall uncover her nakedness; he hath discovered her fountain, and she hath uncovered the fountain of her blood: and both of them shall be cut off from among their people.

Leviticus 18:19

Also thou shalt not approach to a woman to uncover her nakedness, as long as she is put apart for her uncleanness.

Ezekiel 18:6

And hath not eaten upon the mountains, neither hath lifted up his eyes to the idols of the house of Israel, neither hath defiled his neighbor's wife, neither hath come near to a polluted woman,

Leviticus 15:33

And of her that is sick of her flowers, and of him that hath an issue, of the man and of the woman, and of him that lieth with her that is unclean.

Ezekiel 22:10

In thee have they uncovered their fathers' nakedness: in thee have they humbled her that was set apart for pollution.

1 Thessalonians 5:22

Abstain from all appearance of evil.

Hebrews 13:4

Marriage is honorable in all, and the bed undefiled: but lewd persons and adulterers God will judge.

1 Peter 2:11

Dearly beloved, I beseech you as strangers and pilgrims, abstain from fleshly lusts, which war against the soul;