"Early in their experience our students should be taught to become Bible workers. Those who are consecrated and teachable may have success in active service for Christ while pursuing their courses of study. If they spend much time in prayer, if they humbly take counsel from their instructors, they will grow in a knowledge of how to work for souls. And when they go forth into the great harvest field they may with confidence pray, “Let the beauty of the Lord our God be upon us: and establish Thou the work of our hands upon us; yea, the work of our hands establish Thou it.” Psalm 90:17 . CT 431.3"
"And let the beauty of the Lord our God be upon us: and establish thou the work of our hands upon us; yea, the work of our hands establish thou it."
Ellen White directly references Psalms 90:17 in this passage.