Theophany, or Baptism of Christ
is a great feast of today. In Russian folk tradition, this feast is strongly associated with Great Blessing of Waters, this includes getting the holy water from church for home use and, very occasionally, swimming in ice water.
I never did the latter and the mere thought about it gives me a shiver. Yet I would gladly do it if I can achieve a purification in this way. I feel like a glass shard in dirt: wash me, and I’ll give a sparkle.