Fervency in prayer by the power of the Holy Spirit is a good preservative against thoughts rushing in. Flies never settle on the boiling pot.
There are scores of thousands of human insects who are ready at a moment's notice to reveal the Will of God on every possible subject
A man without passion would be like a body without a soul. Or even more grotesque, like a soul without a body.
Praying without fervency is like hunting with a dead dog.
Devotion is the spark that can fire up your chemistry and energy to such a level that it creates an explosion of ecstasy within you.
Rest assured that the most fervid revivalism will wear itself out in mere smoke, if it be not maintained by the fuel of teaching.... Sound teaching is the best protection for the heresies which ravage right and left among us.