Listen to the Holy Bible

He who believes and is baptized will be saved; but he who does not believe will be condemned.
So then the Lord Jesus, after he had spoken to them, was taken up into heaven, and sat down at the right hand of God.
And they went forth and preached everywhere, while the Lord worked with them and confirmed the message by the signs that attended it. Amen.
Mark 16:15-16, 19-20 RSV

