the woman receives two great eagle's wings to escape the dragon - The Revelation, chapter 12 verses 10 to 14
  1. I heard a loud voice in heaven, saying,

    «Now is come the salvation, the power, and the Kingdom of our God, and the authority of his Christ; for the accuser of our brothers has been thrown down, who accuses them before our God day and night,

  2. now that the accuser, who accused our brothers day and night before our god, has been brought down.

  3. They overcame him because of the Lamb's blood, and because of the word of their testimony. They didn't love their life, even to death.

  4. Therefore rejoice, heavens, and you who dwell in them.

  5. Woe to the earth and to the sea, because the devil has gone down to you, having great wrath, knowing that he has but a short time.»

  6. When the dragon saw that he was thrown down to the earth, he persecuted the woman who gave birth to the male child,
  7. Two wings of the great eagle were given to the woman, that she might fly into the wilderness to her place, so that she might be nourished for a time, and times, and half a time, from the face of the serpent.
Hans MEMLING, “Triptych of John the Baptist and John the Evangelist”, detail of the right inner shutter, “Two wings of the great eagle were given to the woman”, Memling Museum, Old St. John's Hospital, Bruges (Brugge)
detail of the right inner shutter, “Two wings of the great eagle were given to the woman”.
that she might fly into the wilderness to her place, The Revelation, chapter 12 verses 10 to 14.
End of the visions of John on Patmos, continuation of the account of the legend of John the Evangelist according to chapter 9 of The Golden Legend

From the point of view of the narrative constructed by Memling, the visions of The Revelation end here.

The life of John the Evangelist continues, after Patmos, on the central panel, according to The Legend of John the Evangelist as told in chapter 9 of The Golden Legend.

resurrection of Drusiana - The Golden Legend, chapter 9

The narrative of the legend of John the Evangelist continues on the inner central panel, in the far right.

According to The Golden Legend, John then returns to Ephesus, where he resurrects Drusiana as Memling depicts him on a capital:

— «Drusiana, my Lord God Jesus Christ ariseth thee; Drusiana arise, and go into thy house, and make ready for me some refection.»

Anon she arose and went in to her house for to do the commandment of St. John, and the people made three hours long a great noise and cry, saying there is but one God, and that is he whom St. John preacheth.

Hans MEMLING, “Triptych of John the Baptist and John the Evangelist”, detail of the central panel, column capital, “resurrection of Drusiana”, Memling Museum, Old St. John's Hospital, Bruges (Brugge)
detail of the central panel, column capital, “resurrection of Drusiana”
Anon she arose and went in to her house, The Golden Legend, chapter 9.
capital of the miracle of the poison cup - The Golden Legend, chapter 9

«If you want me to believe in your God, I will give you a drink of poison and if he does not hurt you, your lord will appear as the true God.»

He drinks the poisoned cup without suffering the slightest harm.

Hans MEMLING, “Triptych of John the Baptist and John the Evangelist”, detail of the central panel, column capital, “capital of the miracle of the poisoned cup”, Memling Museum, Old St. John's Hospital, Bruges (Brugge)
detail of the central panel, column capital, “capital of the miracle of the poisoned cup”
If you want me to believe in your God, I will give you a drink of poison and if he does not hurt you, your lord will appear as the true God., The Golden Legend, chapter 9.
Crato's baptism - The Golden Legend, chapter 9

At the very back, John the Evangelist baptizes the converted philosopher Crato

The apostle named in the name of Christ the priest and the proconsul, who converged with their entire family and then built a church in honor of St. John.

That small domed building can be seen as that church in honor of St. John as told also in chapter 65.

Hans MEMLING, “Triptych of John the Baptist and John the Evangelist”, detail of the central panel, column capital, “baptisma of Crato”, Memling Museum, Old St. John's Hospital, Bruges (Brugge)
detail of the central panel, column capital, “baptisma of Crato”
the apostle named in the name of Christ the priest and the proconsul, who converged with their entire family and then built a church in honor of St. John., The Golden Legend, chapter 9.