Today, a parishioner called my attention to this video:

It begins with worship. I couldn’t agree more.

Christ is born; therefore, glorfy! Christ is come from heaven; encounter Him! Christ is on earth; arise to Him! Sing to the Lord all you who dwell on the earth and in merry spirits, O you peoples, praise His birth, for He is glorified. — Ode i, Katavasiæ of Christmas First Canon