Genesis 22:12 - Why God favored Abraham.

And he said, Lay not thine hand upon the lad, neither do thou any thing unto him: for now I know that thou fearest God, seeing thou hast not withheld thy son, thine only son from me.

What does the LORD require of thee? Abraham is the perfect example of what the LORD expects. God stopped Abraham from sacrificing Isaac as commanded because Abraham proved that he would obey God's commandments at any cost, even if it required killing is only son (Genesis 26:5).