en_tn_lite_do_not_use/1co/10/01.md

our fathers

Paul is referring to the time of Moses in the book of Exodus when Israel fled through the Red Sea as the Egyptian army pursued them. "our" is Inclusive AT: "the fathers of all Jews." (See: rc://en/ta/man/translate/figs-inclusive)

All were baptized into Moses

AT: "all followed and were committed to Moses"

passed through the sea

They all crossed the Red Sea with Moses after leaving Egypt.

in the cloud

by the cloud that led the Israelites during days, representing the presence of God.

that rock was Christ

the "rock" represented the solid strength of Christ who was with them throughout their journey; they could depend on His protection and comfort. (See: rc://en/ta/man/translate/figs-metaphor)