Ἄλλοτε ὥσπερ εῖς τῶν ἀνθρώπων γίγνεται.
Interdum ut quivis hominum fit.
Pseudo-Makarios/Macarius (late 4th/early 5th cent.), spiritual homily 18.9, as trans. for the Office of Readings, Friday of Week 4 in Ordinary Time, by Universalis. Greek from PG 34, col. 640D, not the critical edition. A. J. Mason's Fifty spiritual homilie of 1921 appears to leave this sentence out, though I have requested the critical edition. But it is there in the Maloney translation of 1992, albeit as follows (Pseudo-Macarius: the fifty spiritual homilies and the Great letter, Classics of Western Spirituality (New York: Paulist Press, 1992), 145):
At another time one becomes one with all human beings.