The Holy Spirit Speaks in Acts 11:12

And the Spirit told me to go with them, making no distinction. These six brothers also accompanied me, and we entered the man’s house.

In support of the biblical doctrine of the trinity it can be seen in Acts 11:12 that the Holy Spirit evidences personality by speaking to Peter.

In this passage Peter is recounting an earlier event where the Holy Spirit was identified as the one speaking to him.

Jesus and the Holy Spirit are Identified as Distinct Persons in Acts 10:38

how God anointed Jesus of Nazareth with the Holy Spirit and with power. He went about doing good and healing all who were oppressed by the devil, for God was with him.

In support of the biblical doctrine that the persons of the trinity are distinct from one another we find Peter speaking of both Jesus and the Holy Spirit as distinct persons.

This is in contrast to heretical teachings such as Modalism (which teaches that only one divine person exists who expresses himself at different times in different modes).

The Holy Spirit Speaks in Acts 10:19

And while Peter was pondering the vision, the Spirit said to him, “Behold, three men are looking for you.

In support of the biblical doctrine of the trinity it can be seen in Acts 10:19 that the Holy Spirit evidences personality by speaking to Peter.

This event is mentioned later by Peter where he, again, notes that the Holy Spirit was the specific person speaking.