Genesis 22:6-7

22:6 Abraham took the wood for the burnt offering and put it on his son Isaac. Then he took the fire and the knife in his hand, and the two of them walked on together. 22:7 Isaac said to his father Abraham, “My father?” “What is it, my son?” he replied. “Here is the fire and the wood,” Isaac said, “but where is the lamb for the burnt offering?”

Genesis 30:37

30:37 But Jacob took fresh-cut branches from poplar, almond, and plane trees. He made white streaks by peeling them, making the white inner wood in the branches visible.