Holy Jealousy: God indicates that it is sin and evil for anyone to exalt ~anything~ or ~anyone~ above Him. He is, after all, ~GOD~, who made the galaxies in the nighttime sky and the brain in your head.
He does ~not~ think it is wonderful or a petty fault that people worship their ancestors, or worship their girlfriend or boyfriend, or worship the environment, or worship money, or worship sex, or worship the stars, or worship music, or worship science, or worship reason, or worship themselves.
Thou shalt have no other gods is His FIRST commandment, because if we miss that one, where do we go from there?
THERE IS NO HIGHER VALUE THAN GOD. THERE IS NOTHING WORTH MORE THAN GOD–NO ONE AND NOTHING IS MORE WORTHY OF YOUR ADORATION.
People who left God out of the origin of life got evolution: a brutal, meaningless (and false) view of life.
Philosophers who tried to get rid of God ended up with suicidal existentialism.
Nations that got rid of God ended up with poverty, corruption, immorality, and cultural implosion.
God is holy and all men are sinners. NOW is the time to see that we have broken the Moral Law of the Creator and to go to God for forgiveness through faith in Jesus.
For sinners without forgiveness, there awaits endless torment because we are worse than we think we are, and God is better than we think He is.
And we both will be around forever.
God is terrifyingly good. He is absolute holiness.
His jealousy is holiness, it is not a sin.