Metaphorical Sandcastle Analogy of a life without Christ

Background Text:‬‬ II Chronicles‬ ‭20‬:‭35‬-‭37‬
‬‬‬‬“After this Jehoshaphat king of Judah allied himself with Ahaziah king of Israel, who acted very wickedly. And he allied himself with him to make ships to go to Tarshish, and they made the ships in Ezion Geber. ..............."