What does it mean that God is holy, holy, holy? If God is incomprehensible, why should we even both trying to understand Him? Why should God's holiness motivate me to be holy?

Links:

What does it mean that God is a holy God? What is the holiness of God? - https://www.gotquestions.org/holy-God-holiness-of-God.html

What does it mean that God is holy, holy, holy? - https://www.gotquestions.org/holy-holy-holy.html

What does it mean that God is transcendent? - https://www.gotquestions.org/God-transcendent.html