Matthew Henry, Commentary on the Whole Bible… (1700s)
“ Holding the mystery of faith in a pure conscience, v. 9. Note, The mystery of faith is best held in a pure conscience. The practical love of truth is the most powerful preservative from error and delusion. If we keep a pure conscience (take heed of every thing that debauches conscience, and draws us away from God) , this will preserve in our souls the mystery of faith. ”
