Spiritual prosperity depends immensely on our private devotion, and private devotion
cannot nourish unless we determine that by God’s help we will make time, whatever trouble it may cost us, for thought, for prayer, for the Bible, and for private communion with Christ. Alas! That saying of our Master is sadly overlooked: ‘Enter into your room and shut the door.” (Matthew 6:6.)
J.C. Ryle, Holiness