John 9:4

² And his disciples asked him, saying, Master, who did sin, this man, or his parents, that he was born blind?

³ Jesus answered, Neither hath this man sinned, nor his parents: but that the works of God should be made manifest in him.

I must work the works of him that sent me, while it is day: the night cometh, when no man can work.

⁵ As long as I am in the world, I am the light of the world.

⁶ When he had thus spoken, he spat on the ground, and made clay of the spittle, and he anointed the eyes of the blind man with the clay,

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB: While it is daytime, we must do the works of Him who sent Me. Night is coming, when no one can work.
KJV: I must work the works of him that sent me, while it is day: the night cometh, when no man can work.
WEB: I must work the works of him who sent me while it is day. The night is coming, when no one can work.
ASV: We must work the works of him that sent me, while it is day: the night cometh, when no man can work.
DARBY: I must work the works of him that has sent me while it is day. [The] night is coming, when no one can work.
BLB: It is necessary for us to work the works of the One having sent Me while it is day; night is coming, when no one is able to work.

ÅB: Jeg må gjøre hans gjerninger som har sendt meg, så lenge det er dag; natten kommer da ingen kan arbeide.
OTB: Vi må utføre oppgavene til Ham som sendte Meg mens det ennå er dag. Natten nærmer seg, når ingen kan arbeide.
B1930: Jeg må gjøre hans gjerninger som har sendt mig, så lenge det er dag; natten kommer da ingen kan arbeide.

John 12:35
Then Jesus said unto them, Yet a little while is the light with you. Walk while ye have the light, lest darkness come upon you: for he that walketh in darkness knoweth not whither he goeth.
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Ephesians 5:16
Redeeming the time, because the days are evil.
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John 4:34
Jesus saith unto them, My meat is to do the will of him that sent me, and to finish his work.
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Ecclesiastes 9:10
Whatsoever thy hand findeth to do, do it with thy might; for there is no work, nor device, nor knowledge, nor wisdom, in the grave, whither thou goest.
Read in context
John 11:9–10
Jesus answered, Are there not twelve hours in the day? If any man walk in the day, he stumbleth not, because he seeth the light of this world.
Read in context
Galatians 6:10
As we have therefore opportunity, let us do good unto all men, especially unto them who are of the household of faith.
Read in context
John 17:4
I have glorified thee on the earth: I have finished the work which thou gavest me to do.
Read in context
Colossians 4:5
Walk in wisdom toward them that are without, redeeming the time.
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