New Revised Standard Version
If you do forget the LORD your God and follow other gods to serve and worship them, I solemnly warn you today that you shall surely perish.

New American Bible
But if you do forget the LORD, your God, and go after other gods, serving and bowing down to them, I bear witness to you this day that you will perish utterly.

Douay-Rheims Bible
But if thou forget the Lord thy God, and follow strange gods, and serve and adore them: behold now I foretell thee that thou shalt utterly perish.

But if thou forget the Lord thy God, and follow strange gods, and serve and adore them: behold now I foretell thee that thou shalt utterly perish.

I testify against

Deuteronomy 4:26 I call this day heaven and earth to witness, that you shall quickly perish out of the land, which, when you have passed over the Jordan, you shall possess. You shall not dwell therein long, but the Lord will destroy you,

Deuteronomy 28:58-68 If thou wilt not keep, and fulfil all the words of this law, that are written in this volume, and fear his glorious and terrible name: that is, The Lord thy God: . . .

Deuteronomy 29:25-28 And they shall answer: Because they forsook the covenant of the Lord, which he made with their fathers, when he brought them out of the land of Egypt: . . .

Deuteronomy 30:18,19 I foretell thee this day that thou shalt perish, and shalt remain but a short time in the land, to which thou shalt pass over the Jordan, and shalt go in to possess it. . . .

Joshua 23:13 Know ye for a certainty that the Lord your God will not destroy them before your face, but they shall be a pit and a snare in your way, and a stumbling-block at your side, and stakes in your eyes, till he take you away and destroy you from off this excellent land, which he hath given you.

1 Samuel 12:25 But if you will still do wickedly: both you and your king shall perish together.

Daniel 9:2 The first year of his reign I, Daniel, understood by books the number of the years, concerning which the word of the Lord came to Jeremias, the prophet, that seventy years should be accomplished of the desolation of Jerusalem.

Amos 3:2 You only have I known of all the families of the earth: therefore will I visit upon you all your iniquities.

Zephaniah 1:18 Neither shall their silver and their gold be able to deliver them in the day of the wrath of the Lord: all the land shall be devoured by the fire of his jealousy: for he shall make even a speedy destruction of all them that dwell in the land.

Zephaniah 3:6 I have destroyed the nations, and their towers are beaten down: I have made their ways desert, so that there is none that passeth by: their cities are desolate, there is not a man remaining, nor any inhabitant.

Luke 12:47,48 And that servant, who knew the will of his lord and prepared not himself and did not according to his will, shall be beaten with many stripes. . . .

Luke 13:3,5 No, I say to you: but unless you shall do penance, you shall all likewise perish. . . .