1 Thessalonians 1:4

And has chosen you. This is another way of saying, "and you know that you have become Christians." It is a paradox that we hear: "The Spirit and the Bride say, Come!" and find out the call is to ALL (John 6:44-45). But when we have come into union with him, we find that he has chosen us! Cod's call must be understood as Peter says in 2 Peter 1:10 "So then, my brothers, try even harder to make God's call and his choice of you a permanent experience; if you do so, you will never fall away."