Image of the 144 thousand, clad in white as seen by the prophet Ezra (Esdras in our apochryphal books which is the Hellenization of his name).
2 Esdras 2
42 I Esdras saw upon the mount Sion a great people, whom I could not number, and they all praised the Lord with songs.
43 And in the midst of them there was a young man of a high stature, taller than all the rest, and upon every one of their heads he set crowns, and was more exalted; which I marvelled at greatly.
44 So I asked the angel, and said, Sir, what are these?
45 He answered and said unto me, These be they that have put off the mortal clothing, and put on the immortal, and have confessed the name of God: now are they crowned, and receive palms.
46 Then said I unto the angel, What young person is it that crowneth them, and giveth them palms in their hands?
47 So he answered and said unto me, It is the Son of God, whom they have confessed in the world. Then began I greatly to commend them that stood so stiffly for the name of the Lord.