53:6

Owner of resolute splendor; (Literally: ability to transform; to convey revelation, i.e. Jibril “Angle Gabriel) so he leveled himself.
Meaning:-
Resolute: admirably purposeful, determined, and unwavering.
Splendor: magnificent features or qualities.

53:14

near Sidra-tul-Muntaha (the Lot-tree at the farthest end of the seven heavens, beyond which none can pass).
Meaning:-
Lote tree may refer to: Sidrat al-Muntaha, the tree that marks the end of the seventh heaven, the boundary where no creation can pass, and beyond which is the Throne of Allah,

53:16

When that Lot-tree was covered with what covered it,
Meaning:-
Lote tree may refer to: Sidrat al-Muntaha, the tree that marks the end of the seventh heaven, the boundary where no creation can pass, and beyond which is the Throne of Allah,

53:17

The sight [of the Prophet] did not swerve, nor did it transgress [its limit].
Meaning:-
Swerve: to turn aside abruptly in movement or direction; deviate suddenly from the straight or direct course.
Transgress: break the law, wrongdoing, disobey.

53:19

Have you then considered Al-Lat, and Al-‘Uzza (two idols of the pagan Arabs).
Meaning:-
Al-Lat, and Al-‘Uzza: Three of them are referred to as the daughters of Allah. The Goddesses Al-Uzza, Al-Lat and Menat was most venerated Arab Deities. They were widely worshipped, and the three of them were very popular Goddesses in Mecca at the time of prophet Mohammed (PBUH).
Pagan: is a person who worships many gods or who worships nature and the Earth

53:20

and another, the last third Manat (names of Arabian idols, claimed by the pagans of Makkah to be the daughters of Allah)?
Meaning:-
Al-Uzza, Al-Lat and Menat (Arab Deities) : Three of them are referred to as the daughters of Allah. The Goddesses Al-Uzza, Al-Lat and Menat was most venerated Arab Deities. They were widely worshipped, and the three of them were very popular Goddesses in Mecca at the time of prophet Mohammed (PBUH).

53:23

These (Lat, Uzza and Manat) are nothing but names which you and your forefathers have invented, for Allah has vested no authority in them. The unbelievers follow nothing but mere conjecture and the whims of their own souls, even though right guidance has already come to them from their Lord.
Meaning:-
Al-Uzza, Al-Lat and Menat (Arab Deities) : Three of them are referred to as the daughters of Allah. The Goddesses Al-Uzza, Al-Lat and Menat was most venerated Arab Deities. They were widely worshipped, and the three of them were very popular Goddesses in Mecca at the time of prophet Mohammed (PBUH).
vested:held completely, permanently.
Conjecture: speculation, guesswork, assumption.
Whim: a sudden wish or idea, especially one that cannot be reasonably explained

53:26

And how many an angel is there in the heavens whose intercession does not avail at all except after Allah has given permission to whom He pleases and chooses.
Meaning:-
Intercession: prayer, petition, or entreaty in favor of another.

53:30

This is the sum of their knowledge. Surely your Lord knows who have strayed from His path, and who are rightly guided.
Meaning:-
Stray: to go astray; deviate, to deviate from the direct course.

53:31

And to Allah belongs all that is in the heavens and all that is in the earth, that He may recompense those who do evil with that which they have done (i.e. punish them in Hell), and reward those who do good, with what is best (i.e. Paradise).

53:32

Those who avoid the major sins and immoralities, only [committing] slight ones. Indeed, your Lord is vast in forgiveness. He was most knowing of you when He produced you from the earth and when you were fetuses in the wombs of your mothers. So do not claim yourselves to be pure; He is most knowing of who fears Him.
Meaning:-
Immorality: corruption, dishonesty, character, or conduct; wickedness; evilness and sexual misconduct.

53:33

Have you seen the one who (Walid bin Mughirah, who was willing to embrace Islam, but upon someone’s promise to take the responsibility of getting the punishment on his behalf in lieu of certain amount of money, he) turned away.
Meaning:-
Lieu: instead, in place of.

53:49

that He is even the Lord of the Sirius (dog star whom the pagans Arabs used to worship),
Meaning:-
Sirius: the Dog Star, the brightest-appearing star in the heavens, the brightest star in the Earth’s night sky.
Pagan: is a person who worships many gods or who worships nature and the Earth

53:54

So there covered them that which did cover (i.e. torment with stones).
Meaning:-
Torment: torture, pain, severe physical or mental suffering.