The Prophet (saas) explained that Allah possesses infinite might

in order that people should appreciate the power of allah and adopt a nobler morality out of awe of him, the prophet (saas) used to tell people of the might of allah and of the proofs of the splendour in his creation. he thus became the means whereby they would love allah and fear him. this verse describes how the prophet (saas) was commanded to speak:

say: "what do you think? if allah made it permanent night for you till the day of rising, what god is there other than allah to bring you light? do you not then hear?" say: "what do you think? if allah made it permanent day for you till the day of rising, what god is there other than allah to bring you night to rest in? do you not then see?" (surat al-qasas: 71-72)

the prophet muhammad (saas) also spoke of the proofs of allah's creation to those who did not believe in the hereafter, and explained that allah, who has the power to create them, also had the power to create the same again in the hereafter. the verse in question reads:

say: "travel about the earth and see how he brought creation out of nothing. then later allah will bring about the next existence. allah has power over all things." (surat al-'ankabut: 20)

these are some of the verses in which the prophet (saas) is told in which way to communicate how allah is exalted above anything they associate with him and has no need of anything:

say: "am i to take anyone other than allah as my protector, the bringer into being of the heavens and the earth, he who feeds and is not fed?" say: "i am commanded to be the first of the muslims," and, "do not be among the idolators." say: "i fear, were i to disobey my lord, the punishment of a dreadful day." (surat al-an'am: 14-15)

in the qur'an, the prophet (saas) was also told how to explain that there is no god but allah and that our lord is the lord of all:

say: "who is the lord of the heavens and the earth?" say: "allah." say: "so why have you taken protectors apart from him who possess no power to help or harm themselves?" say: "are the blind and seeing equal? or are darkness and light the same? or have they assigned partners to allah who creates as he creates, so that all creating seems the same to them?" say: "allah is the creator of everything. he is the one, the all-conquering." (surat ar-ra'd: 16)

the prophet (saas) made his community, who knew that allah existed but did not consider his infinite might and were thus unable to appreciate his existence, and acknowledge his power. after that, he called on them to take warning. the verses in question are as follows:

say: "to whom does the earth belong, and everyone in it, if you have any knowledge?" they will say: "to allah." say: "so will you not pay heed?" say: "who is the lord of the seven heavens and the lord of the mighty throne?" they will say: "allah." say: "so will you not do your duty [by him]?" say: "in whose hand is the dominion over everything, he who gives protection and from whom no protection can be given, if you have any knowledge?" they will say: "allah's." say: "so how have you been bewitched?" (surat al-muminun: 84-89)