Deuteronomy 8:19

19 If you forget, forget God, your God, and start taking up with other gods, serving and worshiping them, I'm on record right now as giving you firm warning: that will be the end of you; I mean it - destruction.

Deuteronomy 8:19 Meaning and Commentary

Deuteronomy 8:19

And it shall be, if thou do at all forget the Lord thy God,
&c.] Either the mercies they received from him, not acknowledging they came from him, but ascribing them to themselves; or their duty to him, to whom they were so greatly obliged: and walk after other gods, and serve them, and worship them; which would be to forget him indeed, forsaking his worship, and giving homage and adoration to idols, which is what is intended by these expressions:

I testify against you this day that ye shall surely perish;
by one judgment and calamity or another, as the sword, famine, pestilence, and captivity; there being nothing more provoking to God than idolatry, which so much detracts from his honour and glory: and which besides, in such a people, so highly favoured of God, it argued the basest ingratitude.

Deuteronomy 8:19 In-Context

17 If you start thinking to yourselves, "I did all this. And all by myself. I'm rich. It's all mine!" -

18 well, think again. Remember that God, your God, gave you the strength to produce all this wealth so as to confirm the covenant that he promised to your ancestors - as it is today.

19 If you forget, forget God, your God, and start taking up with other gods, serving and worshiping them, I'm on record right now as giving you firm warning: that will be the end of you; I mean it - destruction.

20 You'll go to your doom - the same as the nations God is destroying before you; doom because you wouldn't obey the Voice of God, your God.