1 Kings 3:2-4
2 The people, however, were still sacrificing at the high places, because a temple had not yet been built for the Name of the Lord.
3 Solomon showed his love for the Lord by walking according to the statutes of his father David, except that he offered sacrifices and burned incense on the high places.
4 The king went to Gibeon to offer sacrifices, for that was the most important high place, and Solomon offered a thousand burnt offerings on that altar.