If God is all-powerful, why didn't He just take Canaan for the Israelites without them needing to go to war?

If Canaan was the promised land, why was the history of that people once they had taken it so dark?

How does God continue to reach people who don't trust Him and don't listen to His advice? Does He just cut them off?

There are great lessons for us in studying how God dealt with our Egyptian-influenced forefathers. This book especially is for those who must deal with close friends and family who decide to take a path that we think is self-destructive. How do we reach them? What would our Father in Heaven do?