Why Do You Do an Animal Sacrifice on Your Son?

The Bible describes in the Bible that Isaac is not like a kid, like a toddler, but anywhere from like eight to like 13. God one day is like, you know what? Abraham, how about you do an animal sacrifice on your son? "I don't need to tell you the theology of it, just know that it was very gory and it's something you want to do on your own child"