1 Kings 3:2-3

3:2 Now the people were offering sacrifices at the high places, because in those days a temple had not yet been built to honor the Lord. 3:3 Solomon demonstrated his loyalty to the Lord by following the practices of his father David, except that he offered sacrifices and burned incense on the high places.

1 Kings 14:23

14:23 They even built for themselves high places, sacred pillars, and Asherah poles on every high hill and under every green tree.