Ezekiel 14:7
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 enquire of him concerning me; I the LORD will answer him by myself:
Ezekiel's work lay among the captives of Israel between the years 595 and 574, beginning and closing just a little later than Jeremiah's work. He was of a priestly family and was first shown wonderful visions of God's glory and majesty, so that having seen God he would not fear the face of man when sent with awful messages of warning and reproof to sinners among his own people. The word was spoken through him as God's mouthpiece among the captives in Babylonia by the river Chebar while Jeremiah was prophesying in Jerusalem.
It is addressed to every one of the house of Israel and to every stranger sojourning in Israel who separates himself from God, sets up idols in his heart, puts the stumblingblock of iniquity before his face, and still comes to a prophet to inquire concerning God, declaring that the Lord Himself will answer him. God's personal answer to such a divided inquirer is given according to that divided state, in opposition and judgment. He sets His face against that man, makes him a sign and a proverb, and cuts him off from among His people.
That answering is an abandoning of such idol-cherishing inquirers to deception by leaving them to their chosen course. A professed Christian who does not wholly love the law of the Lord but keeps a stumblingblock in the heart in place of one of the commandments cannot have great peace and will not have the peace of God. One who turns from God while keeping an idol in the heart and then seeks guidance is in danger, so examining the heart for any idol or stumblingblock reveals the duty to turn from it. Applied to the Sabbath question, a person must not study the Bible looking for justification for Sunday-keeping but must look for the truth.