I’ve written about this feast, its history and theology, many times, most recently here. Perhaps today a single thought will suffice. The Baptism of the Lord marks the beginning of his public ministry. It represents something new in his life, and in the life of the world, yet it was, at the time, an obscure act in an obscure corner of the Roman empire. The baptism of an unknown Galilean by an eccentric preacher out in the Judean wilderness was hardly likely to cause any ripples in Rome.
Life is full of new beginnings. Some of them seem significant, at least to ourselves; others are unremarkable; yet if we are open to the grace of God, even our most obscure actions become capable of uniting us with Christ and his mission. As many of the Fathers loved to recall, when Christ went down into the waters of the Jordan, he took us with him. We must also rise with him to become beloved children in whom the Father is well-pleased.