God's jealousy differs from the sinful jealousy we typically succumb to in our humanity.
God is not envious of nor coveting something that does not rightfully belong to Him.
His jealousy, just as all that He Is, is born from pure agape love...
He is jealous of anything compromising our surrender of our whole heart to Him...something that rightfully belongs to Him anyway, as we were created by Him and for Him.
He is jealous of us placing anything before Him because He is all-knowing and all-seeing...He desires to spare us the danger, misery and sin that follows as a result of not placing Him first in our lives.
He loves us completely, zealously and divinely and His godly jealousy for us is rooted in that as well.
Consider Paul's example, "For I am jealous over you with godly jealousy: for I have espoused you to one husband, that I may present you as a chaste virgin to Christ."
We have ONLY One God, One Master, One Groom...let us prepare diligently for that day and surrender our whole hearts to our betrothed, as we wait in confident expectation and anticipation.
"Let us be glad and rejoice, and give honour to him: for the marriage of the Lamb is come, and his wife hath made herself ready." (Revelation 19:7)
"Thou shalt not bow down thyself to them, nor serve them: for I the Lord thy God am a jealous God..." (Exodus 20:5)
"For by him were all things created, that are in heaven, and that are in earth, visible and invisible, whether they be thrones, or dominions, or principalities, or powers: all things were created by him, and for him.." (Colossians 1:16)
"No man can serve two masters: for either he will hate the one, and love the other; or else he will hold to the one, and despise the other. Ye cannot serve God and mammon." (Matthew 6:24)