John 9:4

It behooveth us to work the works of Him that sent us, while it is day: the night comes, when no one is able to work.

John 12:35

Then Jesus said to them, Yet a little while the light is with you. Walk about as you have the light, in order that the darkness may not overtake you: and he that walketh about in darkness does not know where he is going.

John 4:34

Jesus says to them, My food is that I may do the will of Him that sent me, and finish His work.

Galatians 6:10

Then therefore, as we have opportunity, let us do good to all, especially to those who are of the household of faith.

Luke 13:32-34

And He said to them, Having gone, tell that fox, Behold, I cast out demons and perfect healings to-day and to-morrow, and on the third day I am made perfect.

John 5:19

Then Jesus responded and said to them, Truly, truly, I say unto you, The Son is not able to do anything Himself, unless He may see the Father doing it: for whatsoever He may do, the Son likewise also doeth the same.

John 5:36

But I have a testimony greater than that of John: for the works that the Father hath given me that I may perfect them, these works which I do, testify concerning me, that the Father hath sent me.

John 10:32

Jesus responded to them, I have shown unto you many beautiful works from the Father; on account of which of these do you stone me?

John 10:37

If I do not the works of my Father, believe me not.

John 11:9-10

Jesus responded, Are there not twelve hours of the day? If any one may walk in the day, he does not stumble, because he sees the light of this world:

John 17:4

I glorified thee upon the earth, having finished the work that thou hast given to me that I may do it.

Acts 4:20

for we are not able not to speak those things which we have seen and heard.

Ephesians 5:16

buying in the opportunity, because the days are evil.

Colossians 4:5

Walk about in wisdom toward the aliens, buying in 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 says to them, My food is that I may do the will of Him that sent me, and finish His work.
John 5:19
Then Jesus responded and said to them, Truly, truly, I say unto you, The Son is not able to do anything Himself, unless He may see the Father doing it: for whatsoever He may do, the Son likewise also doeth the same.
John 10:32
Jesus responded to them, I have shown unto you many beautiful works from the Father; on account of which of these do you stone me?
John 17:4
I glorified thee upon the earth, having finished the work that thou hast given to me that I may do it.
Luke 13:32
And He said to them, Having gone, tell that fox, Behold, I cast out demons and perfect healings to-day and to-morrow, and on the third day I am made perfect.
Acts 4:20
for we are not able not to speak those things which we have seen and heard.

While

John 11:9
Jesus responded, Are there not twelve hours of the day? If any one may walk in the day, he does not stumble, because he sees the light of this world:
John 12:35
Then Jesus said to them, Yet a little while the light is with you. Walk about as you have the light, in order that the darkness may not overtake you: and he that walketh about in darkness does not know where he is going.
Ephesians 5:16
buying in the opportunity, because the days are evil.
Colossians 4:5
Walk about in wisdom toward the aliens, buying in the opportunity.