Say, [O Muhammad], "I only invoke my Lord and do not associate with Him anyone." 20 Say, "I do not possess any power to harm or benefit you". 21 Say: “None can protect me from Allah, nor can I find a refuge apart from Him. 22 Unless I convey from God and deliver His message." For those who disobey God and His Apostle is the fire of Hell, where they will abide 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 [doom] of which you were forewarned is near, or whether my Sustainer has set for it a distant term." 25 He is the knower of the Unknown, and He does not divulge His secret to any one 26 He causes angelic guards to march before and after him. 27 That He may know that they have indeed conveyed the messages of their Lord. He surroundeth all their doings, and He keepeth count of all things. 28