KJV:
For every one of the house of Israel, or of the stranger that sojourneth in Israel, which separateth himself from me, and setteth up his idols in his heart, and putteth the stumblingblock of his iniquity before his face, and cometh to a prophet to inquire of him concerning me; I the LORD will answer him by myself:
NASB:
"For anyone of the house of Israel or of the immigrants who stay in Israel who separates himself from Me, sets up his idols in his heart, puts right before his face the stumbling block of his iniquity, and then comes to the prophet to inquire of Me for himself, I the LORD will be brought to answer him in My own person.