Abraham took the wood for the burnt offering and placed it on his son Isaac, and he himself carried the fire and the knife. As the two of them went on together
NIV
Then Abraham took the wood for the burnt offering and laid it on [the shoulders of] Isaac his son, and he took the fire (the firepot) in his own hand, and a knife; and the two of them went on together.
AMP
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.
KJV