When they arrived at the place God had designated, Abraham built the altar there and arranged the wood. He bound his son Isaac and placed him on the altar, atop the wood.
Jewish Publication Society of America Version (JPS1917) - Genesis 22:9 >And they came to the place which God had told him of; and Abraham built the altar there, and laid the wood in order, and bound Isaac his son, and laid him on the altar, upon the wood.