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 - It is often said to be an attribute of God that he tries or searches the hearts of people; 1 Chronicles 28:9; 1 Chronicles 29:17; Jeremiah 11:20; Jeremiah 17:10; Psalms 11:4; Romans 8:27. The meaning here is, that the apostle had a deep conviction of the truth that God knew all his motives, and that all would be revealed in the last day.