For we know, brothers and sisters loved by God, that he has chosen you. For when we brought you the Good News, it was not only with words but also with power, for the Holy Spirit gave you full assurance that what we said was true; and you know of our concern for you from the way we lived when we were with you. 1 Thessalonians 1:4-5

Many messengers are sent by God to deliver to us the Gospel of Truth, and Scripture reminds us that, we should accept it as the True Word of God. “And we continually thank God, that in receiving the word of God from us, you did not accept it as the word of men, but as the true word of God; the word now at work in you who believe. For the word of God is living and active, sharper than any double-edged sword, it pierces even to dividing soul and spirit, joints and marrow, it judges the thoughts and intentions of the heart. So, you, by receiving the message with joy from the Holy Spirit, in spite of the severe suffering it brought you; in this way, you have imitated both us and the Lord, and as a result, you have become an example to all the believers.”