For everything that was written in the past was written for our instruction, so that through endurance and the encouragement of the Scriptures, we might have hope. Romans 15:4

And we continually thank God because, when you received the word of God that you heard from us, you accepted it not as the word of men, but as it truly is, the word of God, which is also now at work in you who believe. 1 Thessalonians 2:13