1 Peter 2:9

But you are a chosen race, a royal priesthood, a consecrated nation, a people for God’s own possession, so that you may proclaim the excellencies of Him who called you out of darkness into His marvelous light. 

We are chosen, and our lives have a destiny in the family of Christians. When we proclaim the goodness of the Lord on this earth, we recognize that Jesus saved us from sin. Our praise for our salvation and freedom from death to eternal life is all because God chose to call us.