Exodus 9:2

εἰ μὲν οὖν μὴ βούλει ἐξαποστεῖλαι τὸν λαόν μου, ἀλλ᾿ ἔτι ἐγκρατεῖς αὐτοῦ,

if indeed, then you are not willing to send my people away, but still detain them,

כי אם־מאן אתה לשׁלח ועודך מחזיק בם׃

*   ἀλλ᾿ | ἀλλὰ
*   detain OR hold on to