“Now the time came
To give birth.
She bore a son.”
Τῇ δὲ Ἐλεισάβετ ἐπλήσθη ὁ χρόνος τοῦ τεκεῖν αὐτήν, καὶ ἐγέννησεν υἱόν.
Luke said that the time had been completed for Elizabeth (Τῇ δὲ Ἐλεισάβετ ἐπλήσθη ὁ χρόνος) to give birth (τοῦ τεκεῖν αὐτήν). Elizabeth had gone through her 9 months of pregnancy. Thus, with a normal birth, she bore a son (καὶ ἐγέννησεν υἱόν). There was nothing spectacular here.