The God Who Wants to be Known.

We cannot comprehend God.

[God is]
    the blessed and only Sovereign,
    the King of kings, 
    and the Lord of lords, 
    ¹⁶ the only One who has immortality,
    dwelling in unapproachable light, 
    whom none of mankind has seen or can see, 
    to whom be honor and eternal might. 1 Tim 6:15-16.

He is eternal: existing outside of time.  He made the universe out of nothing and sustains it.  He knows everything and is utterly pure.

  “To whom will you compare me?
   Or who is my equal?” says the Holy One.  Isa 40:25

He is completely other.  There is no analogy for me to understand Him.

Idolatry is forbidden because it demeans Him and yet throughout the Old Testament He uses anthropomorphisms when He reveals Himself. 
The Bible refers to God's face (Ex 33:20), right hand (Ps 16:11) and eyes (Ps 11:4 ).

Why?

God wants us to know Him.  

God the Father is a person.  We relate to persons.  We cannot relate to an object, force or energy.  God is not some universal moral law dishing out karma. He is not the distant God of Deism.  He wants us to know Him and so reveals himself to us in categories we can understand. He made us in His image; before the fall He walked with man in Eden. He made us for relationship with Him.