Charles Ellicott Commentary Deuteronomy 11:21

"that your days may be multiplied, and the days of your children, in the land which Jehovah sware unto your fathers to give them, as the days of the heavens above the earth." — Deuteronomy 11:21 (ASV)

In the land which the Lord swore to your fathers to give them. — "It is not written here ‘to give you,’ but ‘to give them.’ From this we find the resurrection of the dead taught in the Law."

If this were the remark of a Christian commentator, it would be thought fanciful; but it is only the comment of a Jew. And the Jewish belief in the literal fulfillment of these promises to Abraham, Isaac, and Jacob, simply on the ground of God’s word, is an unquestionable fact, whatever may be thought of it.

Compare Acts 7:5, which is particularly relevant. God “gave him (Abraham) none inheritance in it, no, not so much as to set his foot on; yet He promised that He would give it to him for a possession, and to his seed after him,” besides.