en_tn/exo/14/15.md

Why are you crying out to me?

God is rebuking Israel for complaining. AT: Stop complaining!" (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

The egyptians prefer 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.