Rather than leading the people to the Lord through His Word, the leaders led them to worship false gods, idols. The same theme permeates the book of Jeremiah (here @ Bible Gateway). The climax of that behavior is recorded in Jeremiah 23 (here @ Bible Gateway).
As leaders, and note that as believers all are leaders, the core of what we share with our families, our friends, those in our communities of faith, and those outside the faith with whom the Lord allows us to share the truth, is His Word.
James 3:1 – 2 (here @ Bible Gateway), 2 Timothy 2:15 (here @ Bible Gateway), and 2 Timothy 4:5 (here @ Bible Gateway), support and remind us of this.
Sure there are really good Christian books as those that are really bad. The Word of God, however, is always good. It is always appropriate. It is always true.
In this age there are many who are claiming to have the truth. They are promoting themselves over the Word of God. Churches and organizations that were once effective in spreading the Word of God, have abandoned it.
That is dead serious.