John 9:4

we must work the works of him who sent me, while it is day. Night is coming, when no one can work.

John 12:35

Then Jesus said to them, "A little while longer the light is with you. Walk while you have the light, lest the darkness overtake you; he who walks in the darkness does not know where he is going.

John 4:34

Jesus said to them, "My food is to do the will of him who sent me, and to finish his work.

Galatians 6:10

So then, as we have opportunity, let us do good to all people, and especially to those who are of the household of faith.

Luke 13:32-34

And he said to them, "Go and tell that fox, 'Behold, I cast out demons and perform cures today and tomorrow, and the third day I finish my course.'

John 5:19

Jesus said to them, "Truly, truly, I say to you, the Son can do nothing of himself, but only what he sees the Father doing; for whatever he does, the Son also does.

John 5:36

But the testimony which I have is greater than that of John; for the works which the Father has given me to finish, these very works which I am doing, bear witness of me, that the Father has sent me.

John 10:32

Jesus answered them, "I have shown you many good works from the Father. For which of these do you stone me?"

John 10:37

If I do not do the works of my father, do not believe me;

John 11:9-10

Jesus answered, "Are there not twelve hours in the day? If anyone walks in the day, he does not stumble, because he sees the light of this world.

John 17:4

I have glorified you on the earth, having finished the work which you have given me to do.

Acts 4:20

for we cannot stop speaking about what we have seen and heard."

Ephesians 5:16

making the most of your time, because the days are evil.

Colossians 4:5

Conduct yourselves with wisdom toward outsiders, making the most of the opportunity.

Treasury of Scripture Knowledge

Summary

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

Bible References

Must

John 4:34
Jesus said to them, "My food is to do the will of him who sent me, and to finish his work.
John 5:19
Jesus said to them, "Truly, truly, I say to you, the Son can do nothing of himself, but only what he sees the Father doing; for whatever he does, the Son also does.
John 10:32
Jesus answered them, "I have shown you many good works from the Father. For which of these do you stone me?"
John 17:4
I have glorified you on the earth, having finished the work which you have given me to do.
Luke 13:32
And he said to them, "Go and tell that fox, 'Behold, I cast out demons and perform cures today and tomorrow, and the third day I finish my course.'
Acts 4:20
for we cannot stop speaking about what we have seen and heard."

While

John 11:9
Jesus answered, "Are there not twelve hours in the day? If anyone walks in the day, he does not stumble, because he sees the light of this world.
John 12:35
Then Jesus said to them, "A little while longer the light is with you. Walk while you have the light, lest the darkness overtake you; he who walks in the darkness does not know where he is going.
Ephesians 5:16
making the most of your time, because the days are evil.
Colossians 4:5
Conduct yourselves with wisdom toward outsiders, making the most of the opportunity.