They worshiped the LORD, but they also appointed all sorts of their own people to officiate for them as priests in the shrines at the high places. (NIV)
So they feared the Lord, yet appointed from among themselves, whether high or low, priests of the high places, who sacrificed for them in the shrines of the high places. (AMP)
So they feared the LORD, and made unto themselves of the lowest of them priests of the high places, which sacrificed for them in the houses of the high places. (KJV)