“called-apostle”

(1 Corinthians 1:1) Παῦλος κλητὸς ἀπόστολος Χριστοῦ Ἰησοῦ διὰ θελήματος θεοῦ καὶ Σωσθένης ὁ ἀδελφὸς
(KJV) Paul, called to be an apostle of Jesus Christ through the will of God, and Sosthenes our brother,

Note that “to be” is added in the…