It is because the speakers are not concerned with particular...
It is because the speakers are not concerned with particular names or distinct identification of each and every item; they look at the whole as a single creation. It is the same style that has been used in 6:78, where Ibrahim (a.s.) is quoted as saying: Then when he saw the sun rising, he said: "This is my Lord; this is greater!" (In this verse, where Allah describes the rising and setting of the sun, the feminine words have been used — as is normally done.
But Ibrahim is reported to use masculine pronouns and words for it. Ibrahim did so) because at that time he was completely unaware of its name or its characteristics—except that it was a "thing", (and "thing" in Arabic is masculine). "al-Batil " (untrue, futile, vain) is that which has no purpose, no aim. Allah says: then as for the scum, it passes away as a worthless thing; and as for that which profits the people it remains in the earth (13:17).
That is why when they realized that the creation was not in vain, they understood that Allah would surely gather the people for recompense; and that at that time Allah would mete out to the unjust people a disgraceful punishment, i.e., the Hell. They also knew that there was none who could ward off the underlying principle of chastisement; otherwise, the creation would be in vain. It is the connotation of their prayer: "save us then from the chastisement of the Fire: Our Lord!
surely whosoever Thou makest to enter the Fire, him Thou hast indeed brought to disgrace; and there shall be no helpers for the unjust". QUR'AN: "Our Lord! surely we heard a crier calling to the faith, saying: 'Believe in your Lord '. . . ": The crier or caller refers to the Messenger of Allah (s.a.w.a.). The clause, "saying: Believe", describes the cry or call; "an " (translated here as, saying) is explicative. They affirm before Allah that they have believed in the crier, i.e., the Messenger.
He has brought to them news of many things from Allah; some of which he has warned them against, e.g., sins, faults, death in infidelity and transgression; and some others he has exhorted them to do or seek, e.g., forgiveness, mercy, details of the Garden (which Allah has promised his believing and righteous servants). Therefore, they pray to their Lord to forgive them, to cover their faults, and to make them die with His righteous servants.
Also, they ask Him to fulfill His promise to them — the Garden and the mercy —which the messengers have guaranteed to them by Allah's permission.