1 Kings 13:33-34 (ESV)
After this thing Jeroboam did not turn from his evil way, but made priests for the high places again from among all the people. Any who would, he ordained to be priests of the high places. And this thing became sin to the house of Jeroboam, so as to cut it off and to destroy it from the face of the earth.
In chapter 13 we read about a man of God confronting Jeroboam for his false worship. The man of God himself succumbs to disobedience and loses his life. This opens the door for the above verse. When Jeroboam was confronted by truth there was hope that he would repent and restore proper worship to Israel. But when the man of God also fell into disobedience, that brought what we read above. Absent truth we return to our old way of thinking and living. Jeroboam needed truth. But he rejected it and fell into deeper and long lasting sin. One of the worse things we can do for our lives is to cut God’s spokesman or His word out of our lives. It is through God’s word, spoken by His messengers, that corrects behavior. Jeroboam failed in this regard and God took the kingdom from him. Solomon failed in this regard and God took the kingdom from him. There is no way to escape this truth.
Psalms 119:9 (ESV)
How can a young man keep his way pure?
By guarding it according to your word.
2 Timothy 3:16-17 (ESV)
All Scripture is breathed out by God and profitable for teaching, for reproof, for correction, and for training in righteousness, that the man of God may be complete, equipped for every good work.