-The King of His creation, who is holy, merciful, gracious yet serving justice
-Created beings made from dust and lost in sin.
(Read Exodus 19. The Lord placed limitations on where the people could go, what they could see and on their personal behavior- or they would die if they approached the presence of the Lord wrongly- as they were in an unholy state and The Lord is Holy.)
In Exodus 19 He was being merciful.