Holy is both a characteristic of God as well as a lifestyle for us to emulate.
In regard to people, holy means living according to a moral code or standard. Throughout the Bible, God commands and implores us to be holy. In Leviticus 11:44, God says, “Be holy, because I am holy,” (which is quoted in 1 Peter 1:16.)
Compare to righteous.
Key verse about Holy Spirit: “I baptize you with water for repentance. But after me comes one who is more powerful than I, whose sandals I am not worthy to carry. He will baptize you with the Holy Spirit and fire. (Matthew 3:11,NIV)
A lifelong student of the Bible, Peter DeHaan, PhD, wrote the 1,000-page website ABibleADay.com to encourage people to explore the Bible. His main blog and many books urge Christians to push past the status quo and reconsider how they practice their faith in every area of their lives.