Deuteronomy 34:7

“And Moses [was] an hundred and twenty years old when he died, etc.] Which age of his may be divided into three equal periods, forty years in Pharaoh’s court, forty years in Midian, and forty in the care and government of Israel, in Egypt and in the wilderness; so long he lived, though the common age of man in his time was but threescore years and ten, (<199010>Psalm 90:10); and what is most extraordinary is, his eyes were not dim; as Isaac’s were, and men at such an age, and under, generally be: nor his natural force abated; neither the rigour of his mind nor the strength of his body; his intellectuals were not decayed, his memory and judgment; nor was his body feeble, and his countenance…”

“His eye was not dim - By a miraculous work of God in mercy to his church and people. Deuteronomy 34:8”

“34:7 At age 120, Moses was as strong as ever and in full possession of his faculties. He did not fail to enter Canaan because he died; he died because he failed to enter Canaan.”

“an hundred: Deu 31:2; Act 7:23, Act 7:30, Act 7:36 his eye: Gen 27:1, Gen 48:10; Jos 14:10, Jos 14:11 natural force abated: Heb. moisture fled Deuteronomy 34:8”

“Though he died at the age of one hundred and twenty (see at Deu 31:2), Moses' eyes had not become dim, and his freshness had not abated (לח ב̔́נ. כוד., connected with לח in Gen 30:37, signifies freshness). Thus had the Lord preserved the full vital energy of His servant, even till the time of his death. The mourning of the people lasted thirty days, as in the case of Aaron ( Num 20:29). Deuteronomy 34:9”