Hypostatic union is one of the core Christological terms referring to the union of divine and human natures according to and in the hypostasis of God the Word Jesus Christ (Christ, Jesus, 01: Survey). The Greek and Latin equivalents for the term (i.e. ἕνωσις ὑποστατική/henōsis hypostatikē and unio hypostatica) were used very seldom in the patristic period. In the East, its single or sporadic instances can be found in Leontius of Byzantium (Nest. Eut. 1.176.25), Justinian (Ep. Tria Cap. 61.13–16), Maximus the Confessor (Ep. 15; PG 91.556…