Deuteronomy 31:2

I am an hundred and twenty years old - The 40 years of the wandering had passed since Moses, then 80 years old, “spake unto Pharaoh” (Exodus 7:7; Compare Deuteronomy 34:7).

I can, no more go out and come in - Render I shall not longer be able to go out and come in: i. e., discharge my duties among you. There is no inconsistency with Deuteronomy 34:7. Moses here adverts to his own age as likely to render him in future unequal to the active discharge of his office as leader of the people: the writer of Deuteronomy 34:1-12, one of Moses’ contemporaries, remarks of him that up to the close of life “his eye was not dim, nor his natural force abated” Deuteronomy 31:7; i. e. that he was to the last, in the judgment of others, in full possession of faculties and strength.