"Naboth valued his vineyard highly because it had belonged to his fathers, and he refused to part with it. “The Lord forbid it me,” he said to Ahab, “that I should give the inheritance of my fathers unto thee.” According to the Levitical code no land could be transferred permanently by sale or exchange; every one of the children of Israel must “keep himself to the inheritance of the tribe of his fathers.” Numbers 36:7 . PK 205.1"
"So shall not the inheritance of the children of Israel remove from tribe to tribe: for every one of the children of Israel shall keep himself to the inheritance of the tribe of his fathers."
EGW directly quotes Numbers 36:7 and explains its relevance to the story.
"Naboth's refusal made the selfish monarch ill. “Ahab came into his house heavy and displeased because of the word which Naboth the Jezreelite had spoken to him.... And he laid him down upon his bed, and turned away his face, and would eat no bread.” PK 205.2"
"And Ahab came into his house heavy and displeased because of the word which Naboth the Jezreelite had spoken to him: for he had said, I will not give thee the inheritance of my fathers. And he laid him down upon his bed, and turned away his face, and would eat no bread."
EGW directly quotes 1 Kings 21:4.
"Jezebel soon learned the particulars, and, indignant that anyone should refuse the request of the king, she assured Ahab that he need no longer be sad. “Dost thou now govern the kingdom of Israel?” she said. “Arise, and eat bread, and let thine heart be merry: I will give thee the vineyard of Naboth the Jezreelite.” PK 205.3"
"And Jezebel his wife said unto him, Dost thou now govern the kingdom of Israel? arise, and eat bread, and let thine heart be merry: I will give thee the vineyard of Naboth the Jezreelite."
The EGW passage directly quotes 1 Kings 21:7.