It is the Lord (ho kurios estin). John’s quick insight appears again.
Girt his coat about him (ton ependutēn diezōsato). First aorist middle (indirect) indicative with which note diezōsen heauton in Joh 13:4. Apparently Peter threw on the upper garment or linen blouse (ependutēn) worn by fishers over his waistcloth and tucked it under his girdle.