Historical clue formulations

• "The ___ of Christ" (classic work in Florence's Uffizi Gallery) — 2019-08-25
• Event for Jesus described in Matthew 3:13-17 — 2018-04-22
• Immersive experience — 2016-11-25
• With 14-Down, literally, grueling initiation — 2015-08-06
• Initiation rite — 2007-12-23
• Early rite — 1998-12-10