“Election is the guarantee that God not only invites people to be delivered, but also actually delivers them. ‘You shall call his name Jesus because he shall save his people from their sins’ (Matthew 1:21). God undertakes with omnipotence to save his people. He plans it in election, and he achieves it through the work of his Son, and he applies it infallibly by His Holy Spirit through faith.”
-John Piper, The Pleasures of God: Meditations on God’s Delight in Being God, 129.