1 Thessalonians 5:17
Pray without ceasing.
Dr. Raleigh used to say that he could not preach without communion with nature, and this meant, for him, communion with God. Those who knew him best knew that he lived in an inner world of prayer. He seldom spoke of such experiences; but he has said, "I cannot always pray when I would, but some days I seem to pray all day long." He used to think out his sermons during his solitary walks, and his freshest thoughts came to him under the open sky.
(Life of Dr. Raleigh.)
Parallel VersesKJV: Pray without ceasing.