Moses
Numbers 5:21ESV·traditional attribution

then’ (let the priest make the woman take the oath of the curse, and say to the woman) ‘the LORD make you a curse and an oath among your people, when the LORD makes your thigh fall away and your body swell.

Matthew Henry Presbyterian @wholebiblehenry

We have here the law concerning the solemn trial of a wife whose husband was jealous of her. Observe, I. What was the case supposed: That a man had some reason to suspect his wife to have committed adultery, Num 5:12-14. Here, 1. The sin of adultery is justly represented as an exceedingly sinful sin; it is going aside from God and virtue, and the good way, Pro 2:17.

Commenting on Numbers 5:11-31

John Gill Reformed Baptist @doctorgill

Then the priest shall charge the woman with an oath of cursing,.... An oath which has a curse annexed to it, if taken falsely, which was to be pronounced upon the woman if guilty: and the priest shall say unto the woman; pronouncing the imprecation or curse upon her, she having taken the oath, should she be guilty of the crime suspected of, and she...

Jamieson-Fausset-Brown Reformed @jfbcommentary

The Lord make thee a curse, &c.--a usual form of imprecation (Isa 65:15; Jer 29:22).