And Solomon brought up the daughter of Pharaoh out of the city of David unto the house that he had built for her: for he said, My wife shall not dwell in the house of David king of Israel, because the places are holy, whereunto the ark of the LORD hath come. The daughter of Pharaoh - "And Bithiah, the daughter of Pharaoh, Solomon brought up from the city of David to the palace which he had built for her." - T.
Because the places are holy - Is not this a proof that he considered his wife to be a heathen, and not proper to dwell in a place which had been sanctified? Solomon had not yet departed from the true God.