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

Jesus, therefore, said to them, "Yet a little while is the Light among you. Walk while ye have the Light, lest darkness overtake you; and he that walks in the darkness knows not where he is going.

John 4:34

Jesus saith 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 men, but especially to those of the household of the faith.

Luke 13:32-34

And He said to them, "Going your way, tell this fox, 'Behold, I cast out demons, and perfect cures, to-day and to-morrow; and on the third day I am made perfect.

John 5:19

Jesus, therefore, answered and said to them, "Verily, verily, I say to you, the Son can do nothing of Himself, but what He seeth the Father doing; for whatsoever things He doeth, these also, in like manner, the Son doeth.

John 5:36

But I have a testimony greater than that of John; for the works which the Father hath given Me to accomplish, the very works that I am doing testify concerning Me, that the Father hath sent Me.

John 10:32

Jesus answered them, "Many good works did I show you from My Father; for which of those works do ye stone Me?"

John 10:37

If I do not the works of My Father, believe Me not;

John 11:9-10

Jesus answered, "Are there not twelve hours in the day? If any one walks in the day, he stumbles not, because he sees the light of this world;

John 17:4

I glorified Thee on the earth; having completed the work which Thou hast given Me to do.

Acts 4:20

for we cannot but speak the things which we saw and heard."

Ephesians 5:16

buying up the opportunity, because the days are evil.

Colossians 4:5

Walk in wisdom toward those without, buying up 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 saith to them, "My food is to do the will of Him Who sent Me, and to finish His work.
John 5:19
Jesus, therefore, answered and said to them, "Verily, verily, I say to you, the Son can do nothing of Himself, but what He seeth the Father doing; for whatsoever things He doeth, these also, in like manner, the Son doeth.
John 10:32
Jesus answered them, "Many good works did I show you from My Father; for which of those works do ye stone Me?"
John 17:4
I glorified Thee on the earth; having completed the work which Thou hast given Me to do.
Luke 13:32
And He said to them, "Going your way, tell this fox, 'Behold, I cast out demons, and perfect cures, to-day and to-morrow; and on the third day I am made perfect.
Acts 4:20
for we cannot but speak the things which we saw and heard."

While

John 11:9
Jesus answered, "Are there not twelve hours in the day? If any one walks in the day, he stumbles not, because he sees the light of this world;
John 12:35
Jesus, therefore, said to them, "Yet a little while is the Light among you. Walk while ye have the Light, lest darkness overtake you; and he that walks in the darkness knows not where he is going.
Ephesians 5:16
buying up the opportunity, because the days are evil.
Colossians 4:5
Walk in wisdom toward those without, buying up the opportunity.