Literally ‘weighty words’ refers to that order for giving warning which is mentioned in the next chapter, ‘Arise and give warning’ ( 74:2 ). This means inform people about the hazards of the Hereafter. Undoubtedly this is the most difficult task in the world. For this, the missionary has to stand by the pure and unadulterated Truth, even if he becomes a stranger to all his people. He has to tolerate being tormented by the people, so that the relationship between him and his addressees remains unaffected till the last moment. He has to be unilaterally governed by the principles of patience and avoidance of confrontation, so that his status as da‘i should not be damaged.