Dr. COWAN, was only a man, but his life reflected God’s heart, in his life. He changed my life, forever, by his life and example. For that, I will ever be grateful. HE served the Lord.

Whatever you do, do your work heartily, as for the Lord rather than for men, knowing that from the Lord you will receive the reward of the inheritance. It is the Lord Christ whom you serve.
Colossians 3:23‭-‬24 NASB
https://bible.com/bible/100/col.3.23-24.NASB