Let us all be reminded of the good counsel that the Westminster Larger Catechism provides about hearing sermons:

Question 160: What is required of those that hear the word preached?

Answer: It is required of those that hear the word preached, that they attend upon it with diligence, preparation, and prayer; examine what they hear by the scriptures; receive the truth with faith, love, meekness, and readiness of mind, as the word of God; meditate, and confer of it; hide it in their hearts, and bring forth the fruit of it in their lives.

pdb