I Tessalonicenses 3:5

5 Portanto, não podendo eu também esperar mais, mandei-o saber da vossa fé, temendo que o tentador vos tentasse, e o nosso trabalho viesse a ser inútil.

5 For this reason, when I could stand it no longer, I sent to find out about your faith. I was afraid that in some way the tempter had tempted you and that our labors might have been in vain.