Deuteronomy 3:21

21 And I commanded Joshua at that time, saying, 'Your eyes see all that Yahweh your God has done to these two kings; so Yahweh will do to all [of] the kingdoms where you are about to cross over to.

Deuteronomy 3:21 Meaning and Commentary

Deuteronomy 3:21

And I commanded Joshua at that time
After the conquest of the two kings, and the assignment of their countries to the above tribes; and after Moses had it made known to him that he should quickly die, and Joshua should be his successor; then, by the direction of God, he gave him the following charge:

saying, thine eyes have seen all that the Lord your God hath done unto
these two kings;
Sihon and Og; how their kingdoms were taken from them, and given to Israel, and they slain with the sword; this Joshua was an eyewitness of, and was, no doubt, greatly concerned in the battles with them, being the general in the Israelitish armies; at least this was sometimes his post, and he cannot be thought to have been unemployed in these wars:

so shall the Lord do unto all the kingdoms whither thou passest;
all the kingdoms in the land of Canaan, where there were many, thirty one at least; these would be all conquered and put into the hands of the Israelites, and their kings slain.

Deuteronomy 3:21 In-Context

19 Only your wives and your little children and your livestock (I know that {you have much livestock}) must stay in your towns that I have given you,

20 until Yahweh shall give rest to your brothers as [he did] to you, and also they take possession [of] the land that Yahweh your God [is] giving to them beyond the Jordan; then they may return, each [one] to his possession that I have given to them.

21 And I commanded Joshua at that time, saying, 'Your eyes see all that Yahweh your God has done to these two kings; so Yahweh will do to all [of] the kingdoms where you are about to cross over to.

22 You shall not fear them, for Yahweh your God is the [one] fighting for you.

23 "And I pleaded with Yahweh at that time, saying,