Martyn Lloyd-Jones writes to preachers:
Above all — and this I regard as most important of all — always respond to every impulse to pray. The impulse to pray may come when you are reading or when you are battling with the text. I would make an absolute law of this — always obey such impulse.
Where does it come from? It is the work of the Holy Spirit; it is a part of the meaning of, 'Work out your salvation with fear and trembling. For it is God which worketh in you both to will and to do of his good pleasure' (Philippians 2:12–13).
This often leads to some of the most remarkable experiences in the life of the minister. So never resist, never postpone it, never push it aside because you …