The Hebrew word for ‘jealous’ (kana’) is the same as ‘zealous’ or ‘passionate’. When God says He is ‘jealous’ or ‘passionate’, it means He wants exclusive service and loyalty: ‘Look at me - only me - and serve me.’ Yhwh cannot tolerate any rivals; He insists on absolute devotion. It’s like a husband who demands fidelity from his wife.
““You shall have no other gods before me.
You shall not make for yourself a carved image, or any likeness of anything that is in heaven above, or that is in the earth beneath, or that is in the water under the earth. **You shall not bow down to them or serve them, for I the LORD your God am a jealous God, **visiting the iniquity of the fathers on the children to the third and the fourth generation of those who hate me, but showing steadfast love to thousands of those who love me and keep my commandments."