en_tn/act/02/40.md

he testified

In the New Testament, the term "testify" is often used to refer to how Jesus' followers spoke about the events of Jesus' life, death, and resurrection.

wicked generation

"very evil generation"

received

"believed" or "accepted"

were baptized

Jesus' disciples baptized them.

about three thousand souls

AT: "about 3,000 people" (See: rc://en/ta/man/translate/figs-synecdoche)