en_tn/num/05/30.md

a spirit of jealousy

This phrase refers to the man's attitude and emotions of jealousy. See how you translated this in Numbers 5:14. Alternate translation: "who is jealous" (See: rc://en/ta/man/jit/figs-metonymy)

when he is jealous of his wife

This is an idiom that means that he suspects that his wife has been unfaithful to him by sleeping with another man. Alternate translation: "and suspects that his wife has been unfaithful to him" or "and suspects that his wife has slept with another man" (See: rc://en/ta/man/jit/figs-idiom)

before Yahweh

"in the presence of Yahweh"