Numbers 5:16 net — “‘Then the priest will bring her near and have her stand before the LORD.

and a man goes to bed with her, for sexual relations, without her husband knowing it, and it is hidden that she has defiled herself, since there was no witness against her, nor was she caught–

and if jealous feelings come over him and he becomes suspicious of his wife, when she is defiled; or if jealous feelings come over him and he becomes suspicious of his wife, when she is not defiled–

then the man must bring his wife to the priest, and he must bring the offering required for her, one tenth of an ephah of barley meal; he must not pour olive oil on it or put frankincense on it, because it is a grain offering of suspicion, a grain offering for remembering, for bringing iniquity to remembrance.

The priest will then take holy water in a pottery jar, and take some of the dust that is on the floor of the tabernacle, and put it into the water.

Then the priest will have the woman stand before the LORD, uncover the woman’s head, and put the grain offering for remembering in her hands, which is the grain offering of suspicion. The priest will hold in his hand the bitter water that brings a curse.

Then the priest will put the woman under oath and say to her,“If no other man has gone to bed with you, and if you have not gone astray and become defiled while under your husband’s authority, may you be free from this bitter water that brings a curse.