It does things only a living entity could do.

The Holy Spirit Speaks
Acts 13:2, Hebrews 3:7-9, Revelation 2:7, Galatians 4:6

The Holy Spirit Speaks to God for Us
Romans 8:26, Galatians 4:6

The Holy Spirit Teaches
1 Corinthians 2:10, John 14:26, John 16:13-14, Nehemiah 9:20