Genesis 22:13

And Abraham lifted up his eyes, and looked, and behold behind [him] a ram caught in a thicket by his horns: and Abraham went and took the ram, and offered him up for a burnt offering in the stead of his
son.

Geneva Bible - And Abraham lifting up his eyes, looked, and behold, there was a ram behind him caught by the horns in a bush; then Abraham went and took the ram, and offered him up for a burnt offering in the stead of his son.

My commentary:  Just as Abraham was willing to offer up his only true son, the promised seed for salvation of the world (Jesus himself would be born through the descendents of Isaac), God offered his only son once, to take on all the sins of the entire world.  Abraham was given a Ram as a substitute, which is what the Jew's would do until the day of Jesus Christ.  When he was offered as the final substitute offering on the cross at Golgatha, the veil was torn (split) in two, showing the holy of holies was no longer needed (No more sacrifice required to God for a sin offering of the entire peoples).  What God kept Abraham from doing, in his love of Abraham, he was willing to do for all of us, to this very day, in offering his Son as the last perfect, unblemished Lamb of God.

Genesis 22:8

And Abraham said, My son, God will provide himself a lamb for a burnt offering: so they went both of them together.


Geneva Bible - Then Abraham answered, My son, God will (d) provide him a lamb for a burnt
offering; so they went both together.
(d) The only way to overcome all temptations, is to rest upon God's providence.

Genesis 22:7

And Isaac spake unto Abraham his father, and said, My father: and he said, Here [am] I, my son. And he said, Behold the fire and the wood: but where [is] the lamb for a burnt offering? 


Geneva Bible - hen spake Isaac unto Abraham his father, and said, My father. And he answered, Here am I, my son. And he said, Behold the fire and the wood, but where is the lamb for the burnt offering?

Genesis 22:6

And Abraham took the wood of the burnt offering, and laid [it] upon Isaac his son; and he took the fire in his hand, and a knife; and they went both of them together.


Geneva Bible - Then Abraham took the wood of the burnt offering, and laid it upon Isaac his
son, and he took the fire in his hand, and the knife; and they went both together.

Genesis 22:2

And he said, Take now thy son, thine only [son] Isaac, whom thou lovest, and get thee into the land of Moriah; and offer him there for a burnt offering upon one of the mountains which I will tell thee of.


Geneva Bible - And he said, Take now thy only son Isaac whom thou lovest, and get thee unto the land of (a) Moriah, and (b) offer him there for a burnt offering upon one of the mountains, which I will shew thee.
(a) Which signifieth the fear of God, in the which place he was honored, and Solomon afterward built
the Temple.
(b) Herein stood the chiefest point of his tentation, seeing he was commanded to offer up him in
whom God had promised to bless all the nations of the world.