The width of Paradise:
Let us look at Noble Verse 3:133 "Be quick in the race for forgiveness from your Lord, and for a Garden whose width is that (of the whole) of the heavens and of the earth, prepared for the righteous,"
Let us look at Noble Verse 57:21 "Be ye foremost (in seeking) Forgiveness from your Lord, and a Garden (of Bliss), the width whereof is as the width of heaven and earth, prepared for those who believe in God and His apostles: that is the Grace of God, which He bestows on whom he pleases: and God is the Lord of Grace abounding."
Let us look at Noble Verse 39:73 "And those who feared their Lord will be led to the Garden in crowds: Until behold, they arrive there; its gates will be opened; and its keepers will say: "Peace be upon you! Well have ye done! Enter ye here, to dwell therein."
Let us look at Noble Verse 41:30 "In the case of those who say, "Our Lord is Allah", and further, stand straight and steadfast, the angels descend on them (from time to time): "Fear ye not! (they suggest), Nor grieve! but receive the glad tidings of the Garden (of Bliss) that which ye were promised!"
Let us look at Noble Verse 57:21 "Be ye foremost (in seeking) forgiveness from your Lord, and a Garden (of Bliss) the width whereof is as the width of heaven and earth, prepared for those who believe in Allah and his messengers: That is the grace of Allah, which He bestows on whom He pleases: and Allah is The Lord of Grace abounding."
Let us look at Noble Verse 79:41 "Their Abode will be the Garden."
Let us look at Noble Verse 18:31 "For them will be Gardens of Eternity; beneath them Rivers will flow: they will be adorned therein with bracelets of gold, and they will wear grean garments of fine silk and heavy brocade; they will recline therein on raised thrones. How good the recompense! How beautiful a couch to recline on!"
Let us look at Noble Verse 22:23 "Allah will admit those who believe and work righteous deeds. To Gardens beneath which rivers flow: they shall be adorned therein with bracelets of gold and pearls; and their garments there will be of silk."
Let us look at Noble Verse 35:33 "Gardens of Eternity will they enter: therein will they be adorned with bracelets of gold and pearls; and their garments there will be of silk."
Let us look at Noble Verse 78:32 "Grardens enclosed, and grapevines;"
There is not contradiction in the Noble Verses above !.
In the above Noble Verses, we see that in (3:133) the word "heaven" used, while in (57:21) we see the word "heavens" used.
Similarly, in the above Noble Verses, we see that in (39:73, 41:30, 57:21, and 79:41) the word "Garden" is used for Paradise. The word "Garden" in those verses is "Jannah" in Arabic which means Paradise. We also see in Noble Verses (18:31, 22:23, 35:33, and 78:32) the word "Gardens" is used for Paradise. The word "Gardens" in those verses is written as "Jennat" in Arabic which is the plural for "Jannah".
In the Arabic language, the singular and the plural for the words (Paradise or Garden) and (heaven) is the same thing. Sometimes the word Gardens is used by Allah Almighty to give a bigger picture for Paradise to the Muslims. Also, according to the Noble Quran, Heaven is made of different levels. Not all humans who enter heaven will be on the same level. Some will be at the highest level with the Prophets and the righteous people, and others will be at the lowest level where people who sinned a lot will be at. The word Garden is used for putting all the levels of Heaven into one description which we call it Paradise. However, this big Paradise consists of several levels of Heavens or Gardens.
Similarly, Sometimes the word "heaven" is symbolically used by Allah Almighty to represent all the heavens' levels Allah Almighty created, and sometimes the word "heavens" is used by Allah Almighty to exactly represent all the heavens' levels Allah Almighty created.
In Arabic, the words Heaven and Paradise (Garden) can be either singular or plural depending on the grammar and the word's location in the sentence.
Note: There are singular phrases for Heaven and plural ones as well in the English language. "The LORD of Heavens" is a plural phrase, where "In Heaven we will live peacefully" is a singular one.