He will beautify the meek— i.e. "Will deliver those who meekly depend upon him, and will make them as great and illustrious, as they had been contemptible and mean." See 1 Chronicles 14:2. Mudge renders it, He decorateth the humble with victory.
Related Commentaries of Psalms 149:4
Psalms 149:4
4 For the LORD taketh pleasure in his people: he will beautify the meek with salvation.