1 Thessalonians 3:5

because of this also, I, no longer forbearing, did send to know your faith, lest he who is tempting did tempt you, and in vain might be our labour.

Matthew 4:3

And the Tempter having come to him said, 'If Son thou art of God -- speak that these stones may become loaves.'

Philippians 2:16

the word of life holding forth, for rejoicing to me in regard to a day of Christ, that not in vain did I run, nor in vain did I labour;

1 Corinthians 7:5

Defraud not one another, except by consent for a time, that ye may be free for fasting and prayer, and again may come together, that the Adversary may not tempt you because of your incontinence;

Galatians 2:2

and I went up by revelation, and did submit to them the good news that I preach among the nations, and privately to those esteemed, lest in vain I might run or did run;

1 Thessalonians 3:1-2

Wherefore no longer forbearing, we thought good to be left in Athens alone,

Isaiah 49:4

And I said, 'For a vain thing I laboured, For emptiness and vanity my power I consumed, But my judgment is with Jehovah, And my wage with my God.

Acts 15:36

and after certain days, Paul said unto Barnabas, 'Having turned back again, we may look after our brethren, in every city in which we have preached the word of the Lord -- how they are.'

2 Corinthians 2:11

that we may not be over-reached by the Adversary, for of his devices we are not ignorant.

2 Corinthians 7:5-7

for also we, having come to Macedonia, no relaxation hath our flesh had, but on every side we are in tribulation, without are fightings, within -- fears;

2 Corinthians 11:2-3

for I am zealous for you with zeal of God, for I did betroth you to one husband, a pure virgin, to present to Christ,

2 Corinthians 11:13-15

for those such are false apostles, deceitful workers, transforming themselves into apostles of Christ,

Galatians 1:6-9

I wonder that ye are so quickly removed from Him who did call you in the grace of Christ to another good news;

Galatians 4:11

I am afraid of you, lest in vain I did labour toward you.

Ephesians 4:14

that we may no more be babes, tossed and borne about by every wind of the teaching, in the sleight of men, in craftiness, unto the artifice of leading astray,

1 Thessalonians 2:1

For yourselves have known, brethren, our entrance in unto you, that it did not become vain,

1 Thessalonians 3:6

And now Timotheus having come unto us from you, and having declared good news to us of your faith and love, and that ye have a good remembrance of us always, desiring much to see us, as we also to see you,

James 1:13-14

Let no one say, being tempted -- 'From God I am tempted,' for God is not tempted of evil, and Himself doth tempt no one,

Treasury of Scripture Knowledge

Summary

For this cause, when I could no longer forbear, I sent to know your faith, lest by some means the tempter have tempted you, and our labour be in vain.

General references

Bible References

I sent

1 Thessalonians 3:2
and did send Timotheus -- our brother, and a ministrant of God, and our fellow-workman in the good news of the Christ -- to establish you, and to comfort you concerning your faith,
Acts 15:36
and after certain days, Paul said unto Barnabas, 'Having turned back again, we may look after our brethren, in every city in which we have preached the word of the Lord -- how they are.'
2 Corinthians 7:5
for also we, having come to Macedonia, no relaxation hath our flesh had, but on every side we are in tribulation, without are fightings, within -- fears;

And our

1 Thessalonians 2:1
For yourselves have known, brethren, our entrance in unto you, that it did not become vain,
Isaiah 49:4
And I said, 'For a vain thing I laboured, For emptiness and vanity my power I consumed, But my judgment is with Jehovah, And my wage with my God.
Galatians 2:2
and I went up by revelation, and did submit to them the good news that I preach among the nations, and privately to those esteemed, lest in vain I might run or did run;
Galatians 4:11
I am afraid of you, lest in vain I did labour toward you.
Philippians 2:16
the word of life holding forth, for rejoicing to me in regard to a day of Christ, that not in vain did I run, nor in vain did I labour;

General references

Daniel 6:19
Then doth the king rise in the early morning, at the light, and in haste to the den of lions he hath gone;