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

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

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

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