Exodus 8:32

Καὶ ἐβάρυνεν Φαραὼ τὴν καρδίαν αὐτοῦ καὶ ἐπὶ τοῦ καιροῦ τούτου καὶ οὐκ ἠθέλησεν ἐξαποστεῖλαι τὸν λαόν.

And Pharao hardened his heart even on this occasion and he would not send away the people.

^8:28
ויכבד פרעה את־לבו גם בפעם הזאת ולא שׁלח את־העם׃

*   hardened OR heavied

Exodus 8:32 in Septuagint = Exodus 8:28 in the Hebrew Bible