Nehemiah 6:3

And I sent men to them saying, I am doing a great work, so that it is not possible for me to come down: is the work to be stopped while I go away from it and come down to you?

Proverbs 14:15

The simple man has faith in every word, but the man of good sense gives thought to his footsteps.

Ecclesiastes 9:10

Whatever comes to your hand to do with all your power, do it because there is no work, or thought, or knowledge, or wisdom in the place of the dead to which you are going.

Matthew 10:16

See, I send you out as sheep among wolves. Be then as wise as snakes, and as gentle as doves.

Luke 14:30

And saying, This man made a start at building and is not able to make it complete.

John 9:4

While it is day we have to do the works of him who sent me: the night comes when no work may be done.

1 Timothy 4:15-16

Have a care for these things; give yourself to them with all your heart, so that all may see how you go forward.

Treasury of Scripture Knowledge

Summary

And I sent messengers unto them, saying, I am doing a great work, so that I cannot come down: why should the work cease, whilst I leave it, and come down to you?

Bible References

And i sent

Proverbs 14:15
The simple man has faith in every word, but the man of good sense gives thought to his footsteps.
Matthew 10:16
See, I send you out as sheep among wolves. Be then as wise as snakes, and as gentle as doves.

I am doing

Ecclesiastes 9:10
Whatever comes to your hand to do with all your power, do it because there is no work, or thought, or knowledge, or wisdom in the place of the dead to which you are going.
Luke 14:30
And saying, This man made a start at building and is not able to make it complete.
John 9:4
While it is day we have to do the works of him who sent me: the night comes when no work may be done.
1 Timothy 4:15
Have a care for these things; give yourself to them with all your heart, so that all may see how you go forward.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain