1 Thessalonians 2:1
FOR ye yourselves, brethren, know our entrance in to you, that it was not in vain.
1 Corinthians 15:2
by which also ye are saved; if ye cleave to that word I have preached to you, except haply ye have believed in vain.
1 Corinthians 15:10
But by the grace of God I am what I am: and his grace which was given to me was not in vain; but I laboured more abundantly than they all; yet not I, but the grace of God which was with me.
1 Corinthians 15:58
Wherefore, my beloved brethren, be stedfast, unmoveable, always abounding in the work of the Lord, knowing that your labour is not in vain in the Lord.
2 Corinthians 6:1
WE then as labourers with him, exhort you also that ye receive not the grace of God in vain:
Galatians 2:2
And I went up then by revelation, and laid before them that gospel which I preach among the Heathen, but in private conference with those who were of the first importance, that haply I might not run, nor had run in vain.
Galatians 4:11
I am afraid for you, lest haply I have bestowed on you labour in vain.
Philippians 2:16
holding up the word of life, that I may glory in the day of Christ, that I have not run in vain, nor laboured in vain.
1 Thessalonians 1:3-10
without ceasing calling to mind your work of faith, and labour of love, and patience of hope in our Lord Jesus Christ, before our God and Father;
1 Thessalonians 2:13
For this cause do we also give thanks to God unceasingly, because when ye received the word reported by us from God, ye received it not as the word of man, but, as it is in truth, the word of God, which worketh also effectually in you that believe.
1 Thessalonians 3:5
For this cause also, when I could no longer forbear, I sent to know your fidelity, lest by any means the tempter had tempted you, and our labour should be in vain.
2 Thessalonians 1:10
when he shall come to be glorified in his saints, and to be admired by all those who believe; because our testimony was believed among you in that day.
2 Thessalonians 3:1
FINALLY, brethren, pray for us, that the word of the Lord may run, and be glorified, even as among you;