Isaiah 50:8,9

He is near that justifieth Me

Jehovah the justifier

The consciousness of innocence is expressed (as often in the Book of Job) under the conception of a legal process.

(Prof. J. Skinner, D. D.)

To “justify”

To “justify” is to show to be in the right, by giving Him victory in His cause. The time-long conflict of Israel and her religion with the nations and their idolatries is represented under the figure of a process or plea before God’s tribunal. The triumph of the religion of Jehovah is Israel’s “justification,” or success in her plea. (A. B. Davidson, D.D.)

Messiah’s justification

By His resurrection from the dead and ascension to the right hand of God, with their joyful consequences, He was declared to be the true Messiah, and the Son of God with power (Acts 2:36). (R. Macculloch.)

The enemies of Christ as a moth-eaten garment

They fall into decay like a worn-out garment, and become the food of the moth, which they already carry within them--a figure of destroying power which works imperceptibly and slowly, yet all the more surely (Isaiah 51:8; JobHo 5:12). (F. Delitzsch, D.D.)