God’s character permeates where he lives. A place is made holy by the Lord who is holy. In the same way, a person is made holy by Lord who is holy.
For thus says the One who is high and lifted up, who inhabits eternity, whose name is Holy: “I dwell in the high and holy place, and also with him who is of a contrite and lowly spirit, to revive the spirit of the lowly, and to revive the heart of the contrite. Isaiah 57:15
The setting of this verse contrasts those who are lowly and contrite against those who are proud. So the healing of Isaiah 57:18 is a major heart transplant — the old hardened, proud, willful heart is taken out and a new soft, tender heart is put in which is easily humbled and crushed by the memory of sin and the sin that remains. The crushing is part of the healing.