Parallel
Exodus 7:25
Swete's Septuagint · Berean Standard Bible
καὶ ἀνεπληρώθησαν ἑπτὰ ἡμέραι μετὰ τὸ πατάξαι Κύριον τὸν ποταμὸν.
And seven full days passed after the LORD had struck the Nile.