Reception and Opposition to the Message

¹³ This is why we constantly thank God, because when you received the message about God that you heard from us, you welcomed it not as a human message, but as it truly is,^(A) the message of God,^(B) which also works effectively in you believers.

¹⁵ Make sure that no one falls short of the grace of God and that no root of bitterness springs up, causing trouble and by it, defiling many.^(A)