Deuteronomy 31:2-3

31:2 He said to them, “Today I am a hundred and twenty years old. I am no longer able to get about, ¹  and the Lord has said to me, ‘You will not cross the Jordan.’ 31:3 As for the Lord your God, he is about to cross over before you; he will destroy these nations before you and dispossess them. As for Joshua, he is about to cross before you just as the Lord has said.

[31:2]  ¹ tn Or “am no longer able to lead you” (NIV, NLT); Heb “am no longer able to go out and come in.”