'Person' in the Bible

"Then I heard one holy person speaking, and another holy person addressed the one who was speaking: "In the vision about the regular burnt offering, how much time elapses while the desecration terrifies and both the Holy Place and the Heavenly Army are trampled?'

"Then this person who looked like a man touched me again and strengthened me

""In his place there will arise a despicable person, upon whom no royal authority has been conferred, but he'll invade in a time of tranquility, taking over the kingdom through deception.