Deuteronomy 8:19

¹⁷ And thou say in thine heart, My power and the might of mine hand hath gotten me this wealth.

¹⁸ But thou shalt remember the LORD thy God: for it is he that giveth thee power to get wealth, that he may establish his covenant which he sware unto thy fathers, as it is this day.

And it shall be, if thou do at all forget the LORD thy God, and walk after other gods, and serve them, and worship them, I testify against you this day that ye shall surely perish.

²⁰ As the nations which the LORD destroyeth before your face, so shall ye perish; because ye would not be obedient unto the voice of the LORD your God.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB: If you ever forget the LORD your God and go after other gods to worship and bow down to them, I testify against you today that you will surely perish.
KJV: And it shall be, if thou do at all forget the LORD thy God, and walk after other gods, and serve them, and worship them, I testify against you this day that ye shall surely perish.
WEB: It shall be, if you shall forget the LORD your God, and walk after other gods, and serve them and worship them, I testify against you today that you shall surely perish.
ASV: And it shall be, if thou shalt forget Jehovah thy God, and walk after other gods, and serve them, and worship them, I testify against you this day that ye shall surely perish.
DARBY: And it shall be, if thou do at all forget Jehovah thy God, and go after other gods, and serve them, and bow down to them, I testify against you this day that ye shall utterly perish.
BLB: And it shall come to pass, if you ever forget YHWH your God and follow after other gods, and serve them and worship them, I testify against you⁺ this day that you⁺ will surely perish.

ÅB: Men dersom du glemmer Herren din Gud, og isteden følger andre guder og dyrker dem og tilber dem, da vitner jeg mot dere idag at dere skal omkomme.
OTB: Hvis du noen gang glemmer Herren din Gud og følger andre guder, tjener og tilber dem, vitner jeg mot deg i dag at du helt sikkert vil gå til grunne.
B1930: Men dersom du glemmer Herren din Gud og følger andre guder og dyrker dem og tilbeder dem, da vidner jeg mot eder idag at I visselig skal omkomme.

Study notes (Tyndale)

Original text and word study

Cross references

Deuteronomy 4:26
I call heaven and earth to witness against you this day, that ye shall soon utterly perish from off the land whereunto ye go over Jordan to possess it; ye shall not prolong your days upon it, but shall utterly be destroyed.
Read in context
Luke 13:3
I tell you, Nay: but, except ye repent, ye shall all likewise perish.
Read in context
Zephaniah 1:18
Neither their silver nor their gold shall be able to deliver them in the day of the LORD’s wrath; but the whole land shall be devoured by the fire of his jealousy: for he shall make even a speedy riddance of all them that dwell in the land.
Read in context
1 Samuel 12:25
But if ye shall still do wickedly, ye shall be consumed, both ye and your king.
Read in context
Daniel 9:2
In the first year of his reign I Daniel understood by books the number of the years, whereof the word of the LORD came to Jeremiah the prophet, that he would accomplish seventy years in the desolations of Jerusalem.
Read in context
Joshua 23:13
Know for a certainty that the LORD your God will no more drive out any of these nations from before you; but they shall be snares and traps unto you, and scourges in your sides, and thorns in your eyes, until ye perish from off this good land which the LORD your God hath given you.
Read in context
Luke 13:5
I tell you, Nay: but, except ye repent, ye shall all likewise perish.
Read in context
Zephaniah 3:6
I have cut off the nations: their towers are desolate; I made their streets waste, that none passeth by: their cities are destroyed, so that there is no man, that there is none inhabitant.
Read in context