en_tn_condensed/act/02/37.md

General Information:

Here the word "they" refers to the people in the crowd to whom Peter spoke.

Connecting Statement:

The Jews respond to Peter's speech and Peter answers them.

when they heard this

"when the people heard what Peter had said"

they were pierced in their hearts, and said

This can be stated in active form. Alternate translation: "Peter's words pierced their hearts, and they said" (See: rc://en/ta/man/translate/figs-activepassive)

pierced in their hearts

This means that the people felt guilty and became very sad. Alternate translation: "deeply troubled" (See: rc://en/ta/man/translate/figs-idiom)