Parallel
Exodus 7:17
Clementine Vulgate · Berean Standard Bible
Hæc igitur dicit Dominus : In hoc scies quod sim Dominus : ecce percutiam virga, quæ in manu mea est, aquam fluminis, et vertetur in sanguinem.
This is what the LORD says: By this you will know that I am the LORD. Behold, with the staff in my hand I will strike the water of the Nile, and it will turn to blood.