John 9:4

We must do the works of Him who sent me while there is daylight. Night is coming on, when no one can work.

John 12:35

"Yet a little while," He replied, "the light is among you. Be faithful to the light that you have, for fear darkness should overtake you; for a man who walks in the dark does not know where he is going.

John 4:34

"My food," said Jesus, "is to be obedient to Him who sent me, and fully to accomplish His work.

Galatians 6:10

So then, as we have opportunity, let us labour for the good of all, and especially of those who belong to the household of the faith.

Luke 13:32-34

"Go," He replied, "and take this message to that fox: "'See, to-day and to-morrow I am driving out demons and effecting cures, and on the third day I finish my course.'

John 5:19

"In most solemn truth I tell you," replied Jesus, "that the Son can do nothing of Himself--He can only do what He sees the Father doing; for whatever He does, that the Son does in like manner.

John 5:36

"But the testimony which I have is weightier than that of John; for the work the Father has assigned to me for me to bring it to completion--the very work which I am doing--affords testimony concerning me that the Father has sent me.

John 10:32

Jesus remonstrated with them. "Many good deeds," He said, "have I shown you as coming from the Father; for which of them are you going to stone me?"

John 10:37

If the deeds I do are not my Father's deeds, do not believe me.

John 11:9-10

"Are there not twelve hours in the day?" replied Jesus. "If any one walks in the daytime, he does not stumble--because he sees the light of this world.

John 17:4

I have glorified Thee on earth, having done perfectly the work which by Thine appointment has been mine to do.

Acts 4:20

As for us, what we have seen and heard we cannot help speaking about."

Ephesians 5:16

Buy up your opportunities, for these are evil times.

Colossians 4:5

Behave wisely in relation to the outside world, buying up your opportunities.

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
"My food," said Jesus, "is to be obedient to Him who sent me, and fully to accomplish His work.
John 5:19
"In most solemn truth I tell you," replied Jesus, "that the Son can do nothing of Himself--He can only do what He sees the Father doing; for whatever He does, that the Son does in like manner.
John 10:32
Jesus remonstrated with them. "Many good deeds," He said, "have I shown you as coming from the Father; for which of them are you going to stone me?"
John 17:4
I have glorified Thee on earth, having done perfectly the work which by Thine appointment has been mine to do.
Luke 13:32
"Go," He replied, "and take this message to that fox: "'See, to-day and to-morrow I am driving out demons and effecting cures, and on the third day I finish my course.'
Acts 4:20
As for us, what we have seen and heard we cannot help speaking about."

While

John 11:9
"Are there not twelve hours in the day?" replied Jesus. "If any one walks in the daytime, he does not stumble--because he sees the light of this world.
John 12:35
"Yet a little while," He replied, "the light is among you. Be faithful to the light that you have, for fear darkness should overtake you; for a man who walks in the dark does not know where he is going.
Ephesians 5:16
Buy up your opportunities, for these are evil times.
Colossians 4:5
Behave wisely in relation to the outside world, buying up your opportunities.