first-born

: ; pl., . Metaph., of the priority of Christ (originally perh. a Messianic title, cf. , ; v. on ): ; , ; , ; () , , ; pl., of the elect, , .† first-born Lk 2:7 He 11:28 Ps 88 (89):28 He 1:6 Col 1:15 He 1:6 Col 1:15 Ro 8:29 Col 1:18 Re 1:5 He 12:23 ICC π. πάσης κτίσεως ἐν πολλοῖς ἀδελφοῖς π. ἐκ τ. νεκρῶν ἐκκλησία πρωτοτόκων

first-born (usually as noun, literally or figuratively)

firstbegotten(-born)