Deuteronomy 3:23

And I besought the Lord at that time
When he was told he should die, and Joshua should succeed him; or when the two kings were slain, and their kingdoms conquered; this being the beginning, pledge, and earnest of what God had promised to do for the people of Israel; Moses was very desirous of living to see the work completed, and therefore sought the Lord by prayer and supplication:

saying;
as follows.