en_tn/lev/06/02.md

acts unfaithfully against Yahweh

"disobeys one of Yahweh's commandments"

deceiving his neighbor regarding something held in trust

This can be translated in active form. AT: "lying to his neighbor about something the neighbor let him borrow" (See: rc://en/ta/man/translate/figs-activepassive)

his neighbor

Here "neighbor" means any Israelite, not just someone who lives nearby.