Luke 17:10

So also you, when you have done all things commanded you, say, We are unprofitable servants; what we owed the doing of; we have done.

Matthew 25:30

and cast the unprofitable servant into the darkness outside; there shall be weeping and gnashing of the teeth.

Romans 11:35

or who first gave to him, and it shall be repaid him?

Matthew 25:37-40

Then shall the righteous answer him, saying, Lord, when did we see you hungry, and feed you? or thirsty, and give you drink?

Romans 3:12

all have turned aside, they have together become unprofitable; there is no one that does good, there is not even one;

1 Corinthians 9:16-17

For if I preach the gospel I have nothing to boast of; for a necessity is laid upon me; for woe is me, if I preach not the gospel.

1 Corinthians 15:9-10

For I am the least of the apostles, and am not worthy to be called an apostle, because I persecuted the church of God;

Philippians 3:8-9

But for the same reason also I consider all things to be a loss on account of the excellency of the knowledge of Christ Jesus my Lord, for whose sake I have suffered the loss of all things, and consider them worthless that I may gain Christ

1 Peter 5:5-6

Let the younger in like manner be subject to the elder, and do you all be subject one to another, and be clothed with humility; for God resists the proud but gives grace to the humble.

Treasury of Scripture Knowledge

Summary

So likewise ye, when ye shall have done all those things which are commanded you, say, We are unprofitable servants: we have done that which was our duty to do.

Bible References

General references

Matthew 25:30
and cast the unprofitable servant into the darkness outside; there shall be weeping and gnashing of the teeth.
Romans 3:12
all have turned aside, they have together become unprofitable; there is no one that does good, there is not even one;
Romans 11:35
or who first gave to him, and it shall be repaid him?
1 Corinthians 9:16
For if I preach the gospel I have nothing to boast of; for a necessity is laid upon me; for woe is me, if I preach not the gospel.
1 Corinthians 15:9
For I am the least of the apostles, and am not worthy to be called an apostle, because I persecuted the church of God;
Philippians 3:8
But for the same reason also I consider all things to be a loss on account of the excellency of the knowledge of Christ Jesus my Lord, for whose sake I have suffered the loss of all things, and consider them worthless that I may gain Christ
Philemon 1:11
who was formerly not useful to you but is now most useful to you and me,
1 Peter 5:5
Let the younger in like manner be subject to the elder, and do you all be subject one to another, and be clothed with humility; for God resists the proud but gives grace to the humble.