What does 1 Kings 16:34 mean?

During Ahab’s time, Hiel from Bethel rebuilt Jericho. When he laid the foundation, his oldest son Abiram died. When he set up the gates, his youngest son Segub died. This happened just like God had warned through Joshua, son of Nun. 1 Kings 16:34 - Modern Text Bible

(Rebuilding Jericho comes at a terrible cost, fulfilling a curse spoken by Joshua centuries earlier. This shows that God’s warnings are still in effect.)