Holiness means separation. Something holy is set apart. In the case of God, holiness means He is set apart from everything He has made. Holiness is not simply His righteousness (although that is part of it), but also His otherness. It is the distinction between the Creator and the creature, the infinite distance between God’s divinity and our humanity.
◄ Leviticus 20:26
You are to be holy to me because I, the LORD, am holy, and I have set you apart from the nations to be my own
Holiness means separation. Something holy is set apart. In the case of God, holiness means He is set apart from everything He has made. Holiness is not simply His righteousness (although that is part of it), but also His otherness. It is the distinction between the Creator and the creature, the infinite distance between God’s divinity and our humanity.