"one to be offered, the father took the knife and the fire, and together they ascended toward the mountain summit, the young man silently wondering whence, so far from folds and flocks, the offering was to come. At last he spoke, “My father,” “behold the fire and the wood: but where is the lamb for a burnt offering?” Oh, what a test was this! How the endearing words, “my father,” pierced Abraham's heart! Not yet—he could not tell him now. “My son,” he said, “God will provide Himself a lamb for a burnt offering.” PP 152.1"
"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?"
EGW directly quotes and elaborates on the dialogue between Isaac and Abraham in Genesis 22:7.
"At the appointed place they built the altar and laid the wood upon it. Then, with trembling voice, Abraham unfolded to his son the divine message. It was with terror and amazement that Isaac learned his fate, but he offered no resistance. He could have escaped his doom, had he chosen to do so; the grief-stricken old man, exhausted with the struggle of those three terrible days, could not have opposed the will of the vigorous youth. But Isaac had been trained from childhood to ready, trusting obedience, and as the purpose of God was opened before him, he yielded a willing submission. He was a sharer in Abraham's faith, and he felt that he was honored in being called to give his life as an offering to God. He tenderly seeks to lighten the father's grief, and encourages his nerveless hands to bind the cords that confine him to the altar. PP 152.2"
"And they came to the place which God had told him of; and Abraham built an altar there, and laid the wood in order, and bound Isaac his son, and laid him on the altar upon the wood."
Both passages describe the building of the altar, the laying of the wood, and the binding of Isaac. EGW adds details about Isaac's willing submission and Abraham's grief.
"And now the last words of love are spoken, the last tears are shed, the last embrace is given. The father lifts the knife to slay his son, when suddenly his arm is stayed. An angel of God calls to the patriarch out of heaven, “Abraham, Abraham!” He quickly answers, “Here am I,” And again the voice is heard, “Lay not thine hand upon the lad, neither do thou any thing unto him: for now I know that thou fearest God, seeing thou hast not withheld thy son, thine only son, from Me.” PP 152.3"
"And he said, Lay not thine hand upon the lad, neither do thou any thing unto him: for now I know that thou fearest God, seeing thou hast not withheld thy son, thine only son from me."
EGW directly quotes Genesis 22:12.
"And the angel of the Lord called unto him out of heaven, and said, Abraham, Abraham: and he said, Here am I."
EGW directly quotes Genesis 22:11, describing the angel's intervention and Abraham's response.