Here "all" refers to all the Gentiles at the house who were listening to Peter.
# The people who belonged to the circumcision group of believers
This is another way of referring to the Jewish believers.
# the gift of the Holy Spirit
This refers to the Holy Spirit himself who was given to them.
# the Holy Spirit was poured out
This can be stated in active form. AT: "God poured out the Holy Spirit" (See: [[rc://en/ta/man/translate/figs-activepassive]])
# poured out
The Holy Spirit is spoken of as if he were something that could be poured out upon people. It implies a generous amount. AT: "generously given" (See: [[rc://en/ta/man/translate/figs-metaphor]])