en_tn/exo/14/15.md

Why are you, Moses, continuing to call out to me?

Moses apparently had been praying to God for help, but God told him that it was now time to act. (See: rc://en/ta/man/translate/figs-rquestion)

divide it in two

AT: "cut the sea into two pieces"

Be aware

AT: "Know"

I will harden the Egyptians' hearts

Yahweh will cause the Egyptians to continue to believe the lie that they are stronger than Yahweh.

…so they will go after them

God will harden the hearts of the Egyptians so that the Egyptians will follow the Israelites into the sea.

horsemen

See how you translated this in Exodus 14:6.