They then replied to me, The teaching is not so important because that is for you, but how was the worship, because that is for the Lord. What about preaching the truth as it is that that will se you free. I will not be pleased. I don't expect we need to give a lot of references. Their continual malaise was their idolatry.
Worship is meaningless, if the people are being disobedient.
Saul tried this argument. To give attention is better than the fat of rams. The way to know His will, is to study His Word. David decides it's finally time to bring God's Ark to Jerusalem, after years of it residing in a private home after it had been returned by the Philistines prior to Saul's reign. He organizes quite a large celebration.