It's not a task. It's who we are

The Story and the salt and light metaphors reveal that the church’s fundamental task is to mediate God’s presence as priests and to rule on behalf of God as kings and queens under God, serving God in God’s mission. Our task is to represent God—to mediate God’s goodness, God’s grace, God’s holiness and God’s justice to this world as those who represent God. Salt and light, then, are about not just what we do but who we are.— Sermon on the Mount, page 61