Why does Jesus rebuke them...or us for not believing...and notice it was not believing when seeing, but believing THE REPORT...THE MESSAGE...THE WORD...THE WORD OF PROMISE here...?
St. James is telling us a reality of the Christian life. He is repeating the idea that Jesus talked about earlier.
Jesus says there were two sons. Their father asked them to go and work for Him. One said yes, but did not go. The other said no, but changed his mind and went and did.
You look and see Him…on the cross…dead. Your sins are paid for. You are free to go…to go about your business…to now live—a life…to be…to do. But what do we do?