Into the house, i.e. into an inner chamber in the house, 2 Kings 9:2. He poured the oil on his head; thereby in God's name letting him into the actual possession of the kingdom. For if Elijah did before this time anoint him, as some think, from 1 Kings 19:16, that unction did only confer a remote right to the kingdom, as Samuel's unction did to David, 1 Samuel 16:13. Though others think Elijah did perform that command by Elisha, to whom he left it in charge, and Elisha waited God's time and command for the actual execution of it, which he received at this time.
Related Commentaries of 2 Kings 9:6
2 Kings 9:6
6 And he arose, and went into the house; and he poured the oil on his head, and said unto him, Thus saith the LORD God of Israel, I have anointed thee king over the people of the LORD, even over Israel.