Hazrat Mirza Ghulam Ahmad a.s.
Those who are not lost in God are not bestowed strength from on high. Therefore, it is impossible for them to inculcate pure morals. So establish a sincere relationship with your God. Discard all ridicule, mockery, rancour, foul language, greed, falsehood, unchastity, casting lustful glances, sinful thoughts, materialism, arrogance, pride, self-conceit, mischief and obduracy. Then will you be bestowed everything from heaven. Until you are strengthened by that heavenly power which raises you, and until the Holy Spirit, which bestows life, does not enter you, until then, you are immensely frail and plunged in darkness. In fact, you are dead and devoid of life. In such a state, neither can you contend against any misfortune nor can you escape pride and arrogance when in a position of prosperity and wealth; and you are in every way overcome by Satan and your own ego.
(Hazrat Mirza Ghulam Ahmadas, Noah’s Ark, pp. 73-74)