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. Abraham personally carried the knife for the slaughter and the fire, a glimmering coal or a bit of tinder wood in a kettle, while he laid the wood on Isaac, who thus became the type of the immeasurably greater sacrifice, Jesus Christ, who likewise bore the wood of His cross willingly and patiently and bore our sins in His body on the cross.