By faith Abraham, when God tested him, offered Isaac as a sacrifice. He who had received the promises was about to sacrifice his one and only son, 18even though God had said to him, "It is through Isaac that your offspring will be reckoned." Abraham reasoned that God could raise the dead, and figuratively speaking, he did receive Isaac back from death. Hebrews 11:17-19
When you first read the story of God coming to Abraham and telling to offer up his son as a sacrifice, you're puzzled by it. For one thing, why would God do ask such a thing? and Why would Abraham attempt to do such a thing? But of course we've read the entire story and can see what God was doing. Even as I read it a dozen times, I'll always pause when he lifts the knife to slay his son. How difficult that must have been for him to do that. What kind of faith did it take to do that? It's something we hope we're never faced with.
We Abraham and Isaac as a "type." Fast forward many many years and we see another Father offering to sacrifice his son for an ungrateful people. It boggles the mind why the Father would do that to His Son and why the Son just took it. Quite frankly, at any moment during Jesus' time on earth, He could have called a host of angels (and several additional hosts on standby) to come and sweep Him away. This time, though, the Father allowed His Son to be bloodied and killed.
And for what?
Yeah, for you and me.