Galatians 4:11
I am alarmed about you for fear lest I may have bestowed labor on you to no purpose.
1 Thessalonians 3:5
So, when I could no longer endure it, I sent to find out about your faith, fearing that the tempter had tempted you and that my labor had been in vain.
Galatians 2:2
(I went up at that time in obedience to a revelation). And I laid before them the gospel which I am wont to preach among the Gentiles. I did this privately before those in authority, lest by any means I should be running, or should already have run, in vain.
Acts 16:6
Then they went through Phrygia and Galatia, the Holy Spirit having forbidden them to proclaim the message in Asia.
1 Corinthians 15:58
So, my brothers beloved, stand firm, immovable, always abounding in work for the Lord, because you know that your toil is not fruitless in the Lord.
2 Corinthians 11:2-3
I have a divine jealousy on your behalf; for I betrothed you to one only husband, even to Christ, that I might present you to him, a chaste virgin.
2 Corinthians 12:20-21
For I dread that perhaps, when I come, I may not find you to be such as I wish, and that I may be found by you such as you do not wish; I dread lest there should be quarrels, jealousy, tempers, party spirit, slandering, gossip, arrogance, tumults;
Galatians 4:20
How I wish I could be with you now, that I might change my tone; for I am perplexed about you.
Galatians 5:2-4
Listen to me! I, Paul, declare to you that if you are to continue to follow the rite of circumcision, Christ will be no profit to you.
Philippians 2:16
holding out a message of life. Thus it will be my boast at the day of Christ that I have not run in vain, or toiled for nothing.
2 John 1:8
Watch yourselves, that you do not lose what we have wrought, but that you receive a full reward.