Eschatos is the Greek word for “end.” So, eschatology is “the study of end/last things.” As Peter ends his reminder to Christians to be grounded and growing in the grace and knowledge of our Lord and Savior, he urges us to remember the end towards which God is bringing all things. Jesus will return and bring about the fulfillment of all God’s promises. In the meantime, we must wait. So Peter exhorts us to wait well teaching us that waiting well for the One to come means working well in the world that is.