Passage 2.4.6
ἀνιοῦσι δὲ ἐς τὸν Ἀκροκόρινθον---ἡ δέ ἐστιν ὄρους ὑπὲρ τὴν πόλιν κορυφή, Βριάρεω μὲν Ἡλίῳ δόντος αὐτὴν ὅτε ἐδίκαζεν, Ἡλίου δὲ ὡς οἱ Κορίνθιοί φασιν Ἀφροδίτῃ παρέντος---ἐς δὴ τὸν Ἀκροκόρινθον τοῦτον ἀνιοῦσίν ἐστιν Ἴσιδος τεμένη, ὧν τὴν μὲν Πελαγίαν, τὴν δὲ Αἰγυπτίαν αὐτῶν ἐπονομάζουσιν, καὶ δύο Σαράπιδος, ἐν Κανώβῳ καλουμένου τὸ ἕτερον. μετὰ δὲ αὐτὰ Ἡλίῳ πεποίηνται βωμοί, καὶ Ἀνάγκης καὶ Βίας ἐστὶν ἱερόν· ἐσιέναι δὲ ἐς αὐτὸ οὐ νομίζουσιν.
As you ascend to Acrocorinth—the summit of the mountain above the city, which Briareus gave to Helios when acting as judge, and which Helios, as the Corinthians say, later handed over to Aphrodite—on the ascent to this same Acrocorinth there are sanctuaries dedicated to Isis, whom they surname one Pelagian, the other Egyptian, and two sanctuaries of Serapis, one of which they call Serapis in Canopus. Beyond these stand altars dedicated to Helios, and there is a temple to Necessity and Force; into this temple they do not consider it lawful to enter.