Charles Ellicott Commentary 2 Kings 10:17

"And when he came to Samaria, he smote all that remained unto Ahab in Samaria, till he had destroyed him, according to the word of Jehovah, which he spake to Elijah." — 2 Kings 10:17 (ASV)

And when he came ... he slew. —Literally, And he entered Samaria, and smote.

Ahab. —Again used for the house or family so called. Some manuscripts and the Syriac expresses it this way, reading “the house of Ahab” (Compare 1 Kings 15:29).