It is an awesome thing that God looks down on all the peoples of the world and names a flock for himself, and then sends missionaries in the name of Christ, and then leads his chosen ones to the sound of the gospel, and then saves them. They could be saved no other way. Missions is essential.
“The sheep hear his voice, and he calls his own sheep by name and leads them out . . . the sheep follow him, for they know his voice” (John 10:3-4).
Jesus suffered and died so that the sheep could hear his voice and live. That’s what Caiaphas said without knowing it: “Jesus would die . . . not for the nation only, but also to gather into one the children of God who are scattered abroad.” He gave up his life to gather the sheep. By his blood he bought the mercy that makes his voice unmistakable to his own. Pray that God would apply that mercy to you, and that you would hear and live. (John Piper, Fifty Reasons Why Jesus Came to Die, Pg. 111)
The Spirit has encouraged me by grace to seek thee,
has made known to me thy reconciliation in Jesus,
has taught me to believe it,
has helped me to take three for my God
May be grant me to grow in the knowledge
and experience of thy love,
and walk in it all the way to glory.
(Valley of Vision, Pg. 94)