Parallel
Exodus 7:25
Rahlfs Septuagint (1935) · Berean Standard Bible
καὶ ἀνεπληρώθησαν ἑπτὰ ἡμέραι μετὰ τὸ πατάξαι κύριον τὸν ποταμόν
And seven full days passed after the LORD had struck the Nile.