Isaiah 49:4

4 aBut I said, “I have labored in vain;
I have spent my strength for nothing and vanity;
yet surely my right is with the Lord,
and my recompense with my God.”

1 Corinthians 9:26

26So I do not run aimlessly; I bdo not box as one cbeating the air.

Galatians 2:2

2I went up because of a revelation and set before them (though privately before those dwho seemed influential) the gospel that eI proclaim among the Gentiles, fin order to make sure I was not running or had not grun in vain.

Galatians 4:11

11I am afraid hI may have labored over you in vain.

1 Thessalonians 3:5

5For this reason, iwhen I could bear it no longer, jI sent to learn about your faith, kfor fear that somehow lthe tempter had tempted you and mour labor would be in vain.

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