Coherence of the verses 16-19 of Qiyamah with other verses of the chapter has attracted attention of commentators for a long time. Some have viewed it as a parenthetical remark and justified it with regard to speech style and context. Some other have considered coherence of contradiction or coherence for the word “ejl” in these verses and following verses. Yet, as viewed in paper, none of these views may be agreed with and it is preferred to say that the content and structure of this chapter have been forme on the basis of main word of “jam`”. The word “jam`” along with its verbal and nonverbal derivatives has affected the whole of chapter. The former as “lan najma`”, “joma`” and “jom`a” have been described in the verses and meaning of “jam`” is considered in such words like “almostaqarr”, “baserah”, “eltaffat” and “alaqa”. Therefore, one may claim that the chapter is illumination of one of God`s Names called “jame`”.