Nancy Leigh DeMoss has written a helpful blog post for those who regularly submit themselves to the means of grace that is the preached word.
I particularly appreciated this pre-service exhortation at the top of her list:
Pray for your pastor as he prepares for Sunday. Pray that his schedule would be free from unnecessary distractions. Pray that God will give him understanding into the meaning of the Word. Pray that God will speak to him personally through the Word and that he will respond in humility and obedience. Pray that God will help him to communicate the truth with clarity, freedom, passion, and power.
I don’t know any preacher worth his salt that wouldn’t salivate over the prospect of a people who did half the things this sister advises, especially that kind of prayer.
You can read the entire piece here.