(That He) that Muhammad (pbuh) (may know that they) i.e. the messengers (have indeed conveyed the messages of their Lord) the angels protected them just as they are protecting you; it is also said that this means: so that the messengers, Muhammad and other messengers, know that the angels have conveyed the message from Allah; and it is also said that this means: so that the jinn and human beings know that the messengers have conveyed the messages of their Lord. (He surroundeth all their doings) He has full knowledge of all the angels that surround them, (and He keepeth count of all things) it is also said that He knows their number just as He knows the state of the one who is wrapped up in his raiment'.