May the LORD, the God of your fathers, make you a thousand times as many as you are and bless you, as he has promised you!
Moses here reminds them of the happy constitution of their government, which was such as might make them all safe and easy if it was not their own fault. When good laws were given them good men were entrusted with the execution of them, which, as it was an instance of God's goodness to them, so it was of the care of Moses concerning them...
Commenting on Deuteronomy 1:9-18
The Lord God of your fathers make you a thousand times so many more as ye are,.... This prayer he made, or this blessing he pronounced on them, to show that he did not envy their increase, nor was any ways uneasy at it, but rejoiced in it, though he gave it as a reason of his not being able to govern them alone: and...
Deu 1:11 But in order to guard against any misinterpretation of his words, “I cannot bear you myself alone,” Moses added, “May the Lord fulfil the promise of numerous increase to the nation a thousand-fold.” “Jehovah, the God of your fathers (i.e., who manifested Himself as God to your fathers), add to you a thousand times, כּכם, as many as ye are, and bless you...