Many people know that the word Advent is derived from a Latin root that means "to come." The collect and readings for the First Sunday in Advent share the Advent theme of the coming kingdom. Each selection develops this theme in a slightly different way.
In the Epistle from Romans 13:8-14, the Apostle Paul speaks of the law of love, and he relates loving behavior among believers to the approaching day of the Lord when Christ shall judge all people. Since time marches on toward the end of personal earthly life and the end of human history, believers should be ready always. We should live our lives pursuing all that is spiritually and morally good. And Advent is a special time to emphasize our preparations to meet Christ, in our present life, at the time of death, and at the end of history.