'Holy' in the Bible

Jude, a servant of Jesus Christ and the brother of James, to those of God's selection who have been made holy by God the Father and are kept safe for Jesus Christ:

For certain men have come among you secretly, marked out before in the holy Writings for this evil fate, men without the fear of God, turning his grace into an unclean thing, and false to our only Master and Lord, Jesus Christ.

How they said to you, In the last days there will be men who, guided by their evil desires, will make sport of holy things.

But you, my loved ones, building yourselves up on your most holy faith, and making prayers in the Holy Spirit,