17 They also received the Jordan Valley, all the way from the Sea of Galilee down to the Dead Sea, with the Jordan River serving as the western boundary. To the east were the slopes of Pisgah. 18 "At that time I gave this command to the tribes that would live east of the Jordan: 'Although the Lord your God has given you this land as your property, all your fighting men must cross the Jordan ahead of your Israelite relatives, armed and ready to assist them. 19 Your wives, children, and numerous livestock, however, may stay behind in the towns I have given you. 20 When the Lord has given security to the rest of the Israelites, as he has to you, and when they occupy the land the Lord your God is giving them across the Jordan River, then you may all return here to the land I have given you.'

21 "At that time I gave Joshua this charge: 'You have seen for yourself everything the Lord your God has done to these two kings. He will do the same to all the kingdoms on the west side of the Jordan. 22 Do not be afraid of the nations there, for the Lord your God will fight for you.'

Moses Not Permitted to Enter Canaan

23 "At that time I pleaded with the Lord and said, 24 'O Sovereign Lord, you have only begun to show your greatness and the strength of your hand to me, your servant. Is there any god in heaven or on earth who can perform such great and mighty deeds as you do? 25 Please let me cross the Jordan to see the wonderful land on the other side, the beautiful hill country and the Lebanon mountains.' 26 "But the Lord was angry with me because of you, and he would not listen to me. 'That's enough!' he declared. 'Speak of it no more. 27 But go up to Pisgah Peak, and look over the land in every direction. Take a good look, but you may not cross the Jordan River.

Matthew Henry's Commentary on Deuteronomy 3:17-27

Commentary on Deuteronomy 3:12-20

(Read Deuteronomy 3:12-20)

This country was settled on the Reubenites, Gadites, and half the tribe of Manasseh: see Numbers 32. Moses repeats the condition of the grant to which they agreed. When at rest, we should desire to see our brethren at rest too, and should be ready to do what we can towards it; for we are not born for ourselves, but are members one of another.

Commentary on Deuteronomy 3:21-29

(Read Deuteronomy 3:21-29)

Moses encouraged Joshua, who was to succeed him. Thus the aged and experienced in the service of God, should do all they can to strengthen the hands of those who are young, and setting out in religion. Consider what God has done, what God has promised. If God be for us, who can be against us, so as to prevail? We reproach our Leader if we follow him trembling. Moses prayed, that, if it were God's will, he might go before Israel, over Jordan into Canaan. We should never allow any desires in our hearts, which we cannot in faith offer up to God by prayer. God's answer to this prayer had a mixture of mercy and judgment. God sees it good to deny many things we desire. He may accept our prayers, yet not grant us the very things we pray for. It God does not by his providence give us what we desire, yet if by his grace he makes us content without, it comes to much the same. Let it suffice thee to have God for thy Father, and heaven for thy portion, though thou hast not every thing thou wouldst have in the world. God promised Moses a sight of Canaan from the top of Pisgah. Though he should not have the possession of it, he should have the prospect of it. Even great believers, in this present state, see heaven but at a distance. God provided him a successor. It is a comfort to the friends of the church of Christ, to see God's work likely to be carried on by others, when they are silent in the dust. And if we have the earnest and prospect of heaven, let these suffice us; let us submit to the Lord's will, and speak no more to Him of matters which he sees good to refuse us.