Charles Ellicott Commentary Psalms 44:3

"For they gat not the land in possession by their own sword, Neither did their own arm save them; But thy right hand, and thine arm, and the light of thy countenance, Because thou wast favorable unto them." — Psalms 44:3 (ASV)

The light of thy countenance. —Notice the contrast to this in Psalms 44:24; in times of distress God’s face seemed hidden or averted.