The sensible man, taking into account the remedial effect of the divine prescriptions, gladly bears the sufferings which they bring upon him, since he is aware that they have no cause other than his own sin. But when the fool, ignorant of the supreme wisdom of God’s providence, sins and is corrected, he regards either God or men as responsible for the hardships he suffers.
Watch your heart during all your life — examine it, listen to it, and see what prevents its union with the most blessed Lord. Let this be for you the science of all sciences, and with God’s help, you will easily observe what estranges you from God, and what draws you towards Him and unites you to Him. It is the evil spirit more than anything that stands between our hearts and God; he estranges God from us by various passions, or by the desire of the flesh, by the desires of the eyes, and by worldly pride.
“God and the devil are found at opposite poles. No one can turn his face to God who has not first turned his back on sin. When a man turns his face to God, all of his paths lead to God. When a man turns his face away from God, all of his paths lead to perdition. When a man finally rejects God by word and in his heart, he is no longer fit to do anything that does not serve for his complete destruction, both of his soul and of his body.”
+ St. Nikolai Velimirovich, Thoughts on Good and Evil