Was Piper right to say, “You don’t have a chance against the devil unless you know how to read and understand God’s word”?

“God has given us distinct body and soul, but they exist in psychosomatic unity,” says theologian and ethicist Rob Smith. “The two are knit together (Psalm 139:13).” So what does this mean in the transgender debate?

If Christ is not our supreme treasure, something else will gladly take his place. So how do we preserve our joy in God through the day?