1 Thessalonians 3:5

For this reason, being no longer able to forbear, I sent to know your faith, lest in some way the tempter should have tempted you, and our labor be in vain.

Matthew 4:3

And the tempter came and said to him, If you are the Son of God, command these stones to become bread.

Philippians 2:16

holding fast the word of life, for my glorying in the day of Christ, that I did not run in vain, nor labor in vain.

1 Corinthians 7:5

Withhold not yourselves from one another, except by agreement for a time that you may be at leisure for prayer, and come together again, that Satan may not tempt you by your incontinence.

Galatians 2:2

and I went up by a revelation, and proposed to them the gospel which I preach to the gentiles, but privately to persons of distinction, lest I should run or had run in vain.

1 Thessalonians 3:1-2

When therefore we could no longer refrain, we thought it best to be left alone at Athens,

Acts 15:36

AND after some days Paul said to Barnabas, Let us return and visit the brothers in every city in which we preached the word of the Lord, [and see] how they do.

2 Corinthians 2:11

that we may not be circumvented by Satan; for we are not ignorant of his devices.

2 Corinthians 7:5-7

For when we came into Macedonia our flesh had no rest, but we were distressed on every hand; without were conflicts, within fears;

2 Corinthians 11:2-3

For I am zealous for you with a godly zeal, for I joined you, a chaste virgin, to one husband, to present to Christ;

2 Corinthians 11:13-15

For such false apostles, deceitful laborers, transform themselves into apostles of Christ.

Galatians 1:6-9

I wonder that you have so quickly turned away from him that called you in the grace of Christ to another gospel,

Galatians 4:11

I am afraid of you, lest I have expended labor on you in vain.

Ephesians 4:14

that we may be no longer children, driven about like waves and carried about with every wind of doctrine, by the art of men, and the craftiness of deceitful wiles,

1 Thessalonians 2:1

For you know, brothers, our introduction to you that it was not in vain,

1 Thessalonians 3:6

But now Timothy having come to us from you and told us the good news of your faith and love, and that you have a good remembrance of us always, desiring to see us, as we also you,

James 1:13-14

Let no tempted one say, I am tempted by God; for God is not subject to temptation by evils, and he tempts 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.

Bible References

I sent

1 Thessalonians 3:2
and sent Timothy, our brother and God's co-laborer in the gospel of Christ, to confirm you and to exhort you in behalf of your faith,
Acts 15:36
AND after some days Paul said to Barnabas, Let us return and visit the brothers in every city in which we preached the word of the Lord, [and see] how they do.
2 Corinthians 7:5
For when we came into Macedonia our flesh had no rest, but we were distressed on every hand; without were conflicts, within fears;

And our

1 Thessalonians 2:1
For you know, brothers, our introduction to you that it was not in vain,
Galatians 2:2
and I went up by a revelation, and proposed to them the gospel which I preach to the gentiles, but privately to persons of distinction, lest I should run or had run in vain.
Galatians 4:11
I am afraid of you, lest I have expended labor on you in vain.
Philippians 2:16
holding fast the word of life, for my glorying in the day of Christ, that I did not run in vain, nor labor in vain.