Fr. Brian Harrison has UV studio lighting. Insta like! Judging by the wavelenth and beam divergence, it's an LED-based accent spot, commonly used to create a "natural" skin tone.

"But when he, the Spirit of truth, is come, he will teach you all truth. For he shall not speak of himself; but what things soever he shall hear, he shall speak; and the things that are to come, he shall shew you"