1 Thessalonians 2:1; 1 Thessalonians 3:5

1 Thessalonians 2:1

1 For yourselves, brethren, know our entrance in unto you, that it was not in vain:

1 Thessalonians 3:5

5 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.