But even as we have been approved by God to be entrusted with the Gospel, so we speak; not as pleasing men, but God, who tests our hearts.
which trieth our hearts: The heart is the wellspring of conversation, character, and conduct (Proverbs 4:23). The Bible heart is the seat of emotion, intellect, conscience, and volition. "God tests our hearts...and he is the only one whose approval matters in the end of the day (1 Corinthians 4:5)" (Robertson 17).