οἱ κατὰ τὴν αὐτὴν ἡλικίαν ὄντες
From LSJ
μέχρι δὲ τούτου θεοῖσι εἰδέναι χάριν → but until that time he should feel gratitude to the gods
μέχρι δὲ τούτου θεοῖσι εἰδέναι χάριν → but until that time he should feel gratitude to the gods
one's contemporaries, those of the same age