Colossians 3:23

Whatsoever ye do, do it heartily, as to the Lord, and not to men;

Romans 12:11

in diligence, not slothful; in spirit, fervent, serving the Lord;

Matthew 6:33

But seek ye first His Kingdom and His righteousness; and all these things shall be added to you.

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 9:4

We must work the works of Him Who sent Me, while it is day. Night is coming, when no one can work.

Acts 20:25-31

And now, behold, I know that ye all, among whom I went about preaching the Kingdom, will see my face no more.

Romans 15:18-20

For I will venture to speak only of the things which God wrought through me for the obedience of the gentiles, by word and deed,

1 Corinthians 9:24

Know ye not that those running a race, all, indeed, run; but one receives the prize? So run; that ye may obtain.

1 Corinthians 9:26

I, therefore, so run, as not uncertainly I so fight, as not beating the air.

1 Corinthians 15:10

But by God's grace I am what I am; and His grace which was bestowed upon me did not prove vain; but I labored more abundantly than they all; yet not I, but the grace of God which was with me.

1 Corinthians 16:10

Now, if Timothy comes, see that he may be with you without fear; for he works the work of the Lord, as I also do.

Ephesians 5:16

buying up the opportunity, because the days are evil.

2 Peter 1:12-15

Wherefore, I shall be always ready to remind you of these things, though ye know them, and have become confirmed in the present truth.

Treasury of Scripture Knowledge

Summary

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.

Bible References

Thy hand

Matthew 6:33
But seek ye first His Kingdom and His righteousness; and all these things shall be added to you.
John 4:34
Jesus saith to them, "My food is to do the will of Him Who sent Me, and to finish His work.
Romans 12:11
in diligence, not slothful; in spirit, fervent, serving the Lord;
Romans 15:18
For I will venture to speak only of the things which God wrought through me for the obedience of the gentiles, by word and deed,
1 Corinthians 9:24
Know ye not that those running a race, all, indeed, run; but one receives the prize? So run; that ye may obtain.
1 Corinthians 15:10
But by God's grace I am what I am; and His grace which was bestowed upon me did not prove vain; but I labored more abundantly than they all; yet not I, but the grace of God which was with me.
1 Corinthians 16:10
Now, if Timothy comes, see that he may be with you without fear; for he works the work of the Lord, as I also do.
Ephesians 5:16
buying up the opportunity, because the days are evil.
Colossians 3:23
Whatsoever ye do, do it heartily, as to the Lord, and not to men;
2 Peter 1:12
Wherefore, I shall be always ready to remind you of these things, though ye know them, and have become confirmed in the present truth.

For

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.
Acts 20:25
And now, behold, I know that ye all, among whom I went about preaching the Kingdom, will see my face no more.