4 And the LORD will do to them what he did to Sihon and Og, the kings of the Amorites, whom he destroyed along with their land.

Read Deuteronomy 31:4 Using Other Translations

And the LORD shall do unto them as he did to Sihon and to Og, kings of the Amorites, and unto the land of them, whom he destroyed.
And the LORD will do to them as he did to Sihon and Og, the kings of the Amorites, and to their land, when he destroyed them.
“The LORD will destroy the nations living in the land, just as he destroyed Sihon and Og, the kings of the Amorites.