"I AM HOLY"
The God of Jesus Christ is holy and different. Jesus is the Holy One and He is different.
The enemy soon recognised that. Mark reported about "a man ... with an unclean spirit ... cried out ... I know who You are - the Holy One of God!” (1'23-25).
Jesus is the great "I Am", God's representative. He reveals the holiness and sanctification of God.
His holiness is absolutely unique, far above any other "gods" and unlike humans. He is love and He is gracious and merciful. We are to love as He loves. He is unique.
Another aspect is that only He redeems. Every person who has been redeemed is so because of God and is called to be like Him and be redemptive.
He is holy inasmuch as only He has all spiritual authority and power. He delegates these to His People in Christ.
The Lord's life of godliness, holiness and sanctification revealed the Father and the enemy knew it. So in Christ, we are called to do the same and the enemy will know it.
"Love has been perfected among us in this:
that we may have boldness in the day of judgment;
as He is, so are we in this world,"
1 John 4'17.