Charles Ellicott Commentary Ezekiel 14:4

"Therefore speak unto them, and say unto them, Thus saith the Lord Jehovah: Every man of the house of Israel that taketh his idols into his heart, and putteth the stumblingblock of his iniquity before his face, and cometh to the prophet; I Jehovah will answer him therein according to the multitude of his idols;" — Ezekiel 14:4 (ASV)

Will answer him that cometh. —The words that cometh, not being in the original, should be omitted. The verb answer in the original is passive and has a reflexive sense, meaning “I will show myself answering”—a softer form than the English. The principle that when man persists in going counter to God’s known will, He will allow him to misunderstand that will, is abundantly established by such instances as that of Balaam (Numbers 22:20) and of Micaiah (1 Kings 22:15).

No man can hope to know what God would have him to do unless his own heart is truly submissive to the Divine will. The threat here is that the man coming to inquire of God with a heart full of idolatry will receive no true answer from that Omniscience which he does not respect. Instead, he will find himself deceived by the illusions of his own heart. This idea is more fully developed in the following verse .