# if you refuse to let them go, if you still keep them back
These two phrases mean basically the same thing. They will emphasize to Pharaoh what will happen if Pharaoh does this. AT: "if you continue refusing to let them go" (See: [[rc://en/ta/man/translate/figs-parallelism]])
# then Yahweh's hand will be on your cattle
The word "hand" here represents Yahweh's power to afflict their animals with disease. AT: "then the power of Yahweh will afflict your cattle" (See: [[rc://en/ta/man/translate/figs-metonymy]])
# on your cattle
The word "your" here refers to all the people of Egypt who owned cattle.