1 Kings 3:2

Only the people sacrificed in high places,.... On the tops of their houses, on hills and mountains, and particularly at the high place in Gibeon, where the tabernacle was:

because there was no house built unto the name of the Lord until those days; to which they were obliged to repair as afterwards, and there offer their sacrifices, as the Lord had commanded, Deuteronomy 12:5.