Albert Barnes Commentary Luke 1:49

"For he that is mighty hath done to me great things; And holy is his name." — Luke 1:49 (ASV)

He that is mighty. God.

Hath done to me great things. Has conferred on me great favors and distinguished mercies.

And holy is his name (Psalms 111:9). This is an expression of Mary's feelings, desiring to bestow on God all honor and praise. As the highest honor, she declared that his name was holy—that is, that God was free from sin, injustice, and impurity.

The "name" of God is often put for God himself. The proper name of God is Jehovah, a word expressive of his essential being, derived from the word to be (Exodus 3:14; Exodus 6:3; Psalms 83:18).

That name is holy; is to be regarded as holy; and to make a common or profane use of it is solemnly forbidden (Exodus 20:7).