Galatians 4:11
I fear for you, that perhaps I have labored over you in vain.
1 Thessalonians 3:5
For this reason, when I could endure it no longer, I also sent to find out about your faith, for fear that the tempter might have tempted you, and our labor would be in vain.
Galatians 2:2
I went up because of a revelation; and I set before them the gospel that I preach among the Gentiles. But I did this privately to those who were of reputation, for fear that I was running or had run my race in vain.
Acts 16:6
And they went through the region of Phrygia and Galatia, having been forbidden by the Holy Spirit to speak the word in Asia.
1 Corinthians 15:58
Therefore, my beloved brethren, be steadfast, immovable, always abounding in the work of the Lord, knowing that your labor is not in vain in the Lord.
2 Corinthians 11:2-3
I am jealous for you with a godly jealousy; for I betrothed you to one husband, so that to Christ I might present you as a pure virgin.
2 Corinthians 12:20-21
For I am afraid that when I come I may not find you what I wish you to be, and you may not find me what you wish me to be; I fear that there may be quarreling, jealousy, outbursts of anger, factions, slander, gossip, arrogance and disorder.
Galatians 4:20
I could wish to be present with you now and to change my tone, for I am perplexed about you.
Galatians 5:2-4
Behold I, Paul, say to you that if you receive circumcision, Christ will be of no benefit to you.
Philippians 2:16
holding fast the word of life, so that in the day of Christ I may be proud that I did not run in vain or labor in vain.
2 John 1:8
Watch yourselves, that you do not lose what you have worked for, but that you may receive a full reward.