Say: "I do no more than invoke my Lord, and I join not with Him any (false god)." 20 Say: "It is not in my power to cause you harm, or to bring you to right conduct." 21 Say: 'None shall protect me from Allah, and other than Him, I will find no refuge, 22 (Mine is) but conveyance (of the Truth) from Allah, and His messages; and whoso disobeyeth Allah and His messenger, lo! his is fire of hell, wherein such dwell for ever. 23 [Let them, then, wait] until the time when they behold that [doom] of which they were forewarned: for then they will come to understand which [kind of man] is more helpless and counts for less! 24 Say: 'I do not know whether that which you are promised is nigh, or whether my Lord will appoint for it a space; 25 He is the Knower of the unseen, and He discloseth not His unseen unto anyone. 26 Except whom He has approved of messengers, and indeed, He sends before each messenger and behind him observers 27 so as to make manifest that it is indeed [but] their Sustainer's messages that these [apostles] deliver: for it is He who encompasses [with His knowledge] all that they have [to say,] just as He takes count, one by one, of everything [that exists]. 28