John Gill Commentary 2 Kings 9:6

"And he arose, and went into the house; and he poured the oil on his head, and said unto him, Thus saith Jehovah, the God of Israel, I have anointed thee king over the people of Jehovah, even over Israel." — 2 Kings 9:6 (ASV)

And he arose, and went into the house
Into the inner chamber in it:

and he poured the oil on his head, and said unto him, thus says the
Lord God of Israel, I have anointed you king over the people of the
Lord, even over Israel ;
for though they were fallen into idolatry, and from the pure worship of God, yet the Lord had still a right unto them, and as yet he had not wrote a "Loammi" (Hosea 1:9) upon them; and there were many among them which had not bowed the knee to Baal.