"For as many of you as were baptized into Christ have put on Christ" (Gal. 3:27).
As part of his chapel message, a Lutheran high school teacher asked students, "What was the best day in the history of the world?" He then led them to consider and believe that the answer would be "the first Easter." The Day of Resurrection!
Hard to argue. That's a very good answer to a very interesting question!
It made me think, though, of some other very big days. The first that came to mind was the day the Son of God took flesh in the womb of Mary. Then I thought about the first Christmas. I thought for a long time about the first Good Friday. I found myself thinking about the Ascension, and then the coming of the Holy Spirit on Pentecost.
And I began to question the question. Why do we have to pick just one day? The Gospel gives us many best days of which to think, each one adding to our faith.
Then it dawned on me. No, there is a best day. The best day ever is the day I was baptized into Christ, because on that one day the incarnation, birth, death, resurrection, and ascension of Christ were all at once applied to me, together with the Holy Spirit.
Best day ever? Your Baptism!
And then by reminding you of your Baptism, God makes today the best day too!