Why does the Orthodox Church celebrate the assumption of Mary? It turns out, it’s because of Easter.
But Easter has to do with Jesus, and this feast day is about Mary, right? As with all celebrations of the Saints, of course, it’s Jesus who shines through them to receive the highest and most ultimate praise. … And so a feast day for a Saint is never really just about that Saint. It’s always about Christ who that Saint conforms to. There are some Christians who think of the Kingdom of heaven as a zero sum game, where any praise a Saint gets is praise that God isn’t getting. But that’s not how the Kingdom works at all. Christ glories in his Saints, and his Saints glory in him. Christ’s glory is not diminished when we celebrate those who belong to him; just the opposite—his glory increases. And so let’s look to Mary, and see how she increases her Son’s glory.