Deuteronomy 3:21

21 `And Jehoshua I have commanded at that time, saying, Thine eyes are seeing all that which Jehovah your God hath done to these two kings -- so doth Jehovah to all the kingdoms whither thou are passing over;

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 infants, and your cattle -- I have known that ye have much cattle -- do dwell in your cities which I have given to you,

20 till that Jehovah give rest to your brethren like yourselves, and they also have possessed the land which Jehovah your God is giving to them beyond the Jordan, then ye have turned back each to his possession, which I have given to you.

21 `And Jehoshua I have commanded at that time, saying, Thine eyes are seeing all that which Jehovah your God hath done to these two kings -- so doth Jehovah to all the kingdoms whither thou are passing over;

22 fear them not, for Jehovah your God, He is fighting for you.

23 `And I entreat for grace unto Jehovah, at that time, saying,