Dr. Cole was renowned for his ability to enscapsulate universal principles of God’s Kingdom into one-liners, known the world around as “Coleisms.”
"Humble, prove, know" is God's pattern for testing.”
But as we were allowed of God to be put in trust with the gospel, even so we speak; not as pleasing men, but God, which trieth our hearts. 1 Thessalonians 2:4
Humility precedes blessing. Proving proceeds promotion. To promote what is not proven is to promote the untested. Proving comes through testing. If you promote what has not been tested, you will be tested on what you promote. Real men prove God by taking Him at His Word. God proves men by their obedience to His Word.