Left-hand window: St John the Divine
He is shown with an inscription: I was in the Spirit
This inscription appears twice in the book of Revelation written by St John when he was exiled to the Island of Patmos in the period AD 95 to 97.
Revelation 1: 9-11
I John, your brother, who share with you in Jesus the tribulation and the kingdom and the patient endurance, was on the island called Patmos on account of the word of God and the testimony of Jesus. I was in the Spirit on the Lord’s Day, and I heard behind me a loud voice like a trumpet saying, “Write what you see in a book and send it to the seven churches, to Ephesus and to Smyrna and to Pergamum and to Thyraira and to Sardis and to Philadelphia and to Laodicea.
Revelation 4: 1-3
After this I looked, and lo, in heaven and open door! And the first voice, which I had heard speaking to me like a trumpet, said, “Come up hither, and I will show you what must take place after this.” At once I was in the Spirit, and lo, a throne stood in heaven, with one seated on the throne! And he who sat there looked like jasper and carnelian, and round the throne was a rainbow that looked like an emerald.