Email Apologetics 5 (gospel illustrations in Genesis)

This is another post in the series of emails between my friend and his dad. In one of my friend's dad's emails he says the following sentence:

"I hope that God sees me fit for mercy and on the appointed day welcomes me into the Holy Presence."

How can God see him as fit? If its by works, not by grace, of which he would have some part in, then he's not going to get in. (Eph. 2:1-10). How do we teach him how often in scripture God points to His salvation of the people instead of their work? How about showing him these examples?
Genesis 3 (in particular vs 7 & 21): Man tries to cover his sin ineffectively with a fig leaf. God instead covers it effectively with an animal skin. God kills the animal and makes the clothes, not man!
Genesis 7 (in particular vs 16): God destroys the world b/c of people's sin, but saves Noah. He tells Noah how to build the ark, and then when Noah is inside, God shuts the door for him. The ark is an illustration of Jesus that protects us from God's wrath. And God was the source of all of it.
Genesis 22 (in particular vs 13-14 ): Abraham is to kill his son Issac. Abe logically believes that God will raise him from the dead. Instead God provides a ram to be sacrificed instead. God provides, not man. And the son of the promise is effectively slain but raised from the dead. I know this one is a little harder to see.
Genesis 28 (in particular vs 12): Jacob (soon to be renamed Israel) sees a ladder between heaven and earth with angels ascending and descending. This ladder is Jesus. He connects earth and heaven as only God can. Man doesn't create this ladder. Jesus even refers t this incident in John 1:50-51.
Genesis 37,41-45: Joseph is the son of promise who is hated by his brothers and sold into slavery, aka death. The son rises out of prison and rules all of Egypt and is able to provide for his family. Just like Jesus who was hated by His Jewish brothers, slain, and who raised on the 3rd day and now provides mediation and salvation to us who repent and believe in Him. And by the way in both cases man does nothing. God makes it all happen.

I can keep going to include Moses leading the people across the red sea, something in possible that man couldn't do. Or Joshua who rolls back the Jordan to a town called Adam so that we can clearly see that sin is rolled back to Adam in Christ. Or Ruth, a foreigner, who is granted a kinsman redeemer and welcomed into the true people of God. All of these happen b/c God does the work not man. God won't see us fit on the final judgment day. Only by claiming Christ and His work will we get in.

By the way if you think he's struggling with the veracity of the Bible and he'd listen to a lecture on it. This is my favorite one. If you haven't listened to this before, its well worth your time.