'Unto' in the Bible

Paul, and Silvanus, and Timothy, unto the church of the Thessalonians in God our Father and the Lord Jesus Christ;

when he shall come to be glorified in his saints, and to be marvelled at in all them that believed (because our testimony unto you was believed) in that day.

Now we beseech you, brethren, touching the coming of our Lord Jesus Christ, and our gathering together unto him;

But we are bound to give thanks to God always for you, brethren beloved of the Lord, for that God chose you from the beginning unto salvation in sanctification of the Spirit and belief of the truth:

not because we have not the right, but to make ourselves and ensample unto you, that ye should imitate us.