St. Sergius of Radonezh
Orthodox Saints · Various centuries
“If you want to serve God, prepare your heart not for food, not for drink, not for rest, not for ease, but for suffering, so that you may endure all temptations, trouble and sorrow. Prepare for severities, fasts, spiritual struggles and many afflictions, for "by many afflictions is it appointed to us to enter the Kingdom of Heaven" (Acts 14, 22); "The Heavenly Kingdom is taken by force, and those who use force seize it". (Matt 11:12)”
— Life, 10
“Orthodox Christians must steadfastly remain in Orthodoxy, preserve oneness of mind with one another and unhypocritically love, guard purity of soul and body, reject evil and unclean intentions, temperately partake of food and drink, and above all adorn themselves with humility, not neglect hospitality, refrain from conflicts and not give honor and glory in anything to earthly life, but instead await a reward from God: the enjoyment of heavenly goods.”
— Life, 32