'Letter' in the Bible

And they sent a letter by them, saying, The Apostles and the older brothers, to the brothers who are of the Gentiles in Antioch and Syria and Cilicia, may joy be with you:

So they, being sent away, came down to Antioch, and having got the people together, they gave them the letter.

But as to the Gentiles who have the faith, we sent a letter, giving our decision that they were to keep themselves from offerings made to false gods, and from blood, and from the flesh of animals put to death in ways against the law, and from the evil desires of the body.

And he sent a letter in these words:

And they, when they came to Caesarea, gave the letter to the ruler, and took Paul before him.