Both the Old Testament and the New Testament teach those who would follow God to love Him with all that we are… including with our minds. Christianity is a faith based first in information about historical events, and we are to use our minds to live as we should, to share truth with others, and to worship our Creator. Loving God with your mind isn’t optional… it’s the foundation of our relationship.
God is "simple." That is, He is not a combination of things that already existed, like a cabinet is made of wood. Instead, He existed before anything else existed. Because of this, anything true of God comes not from His parts, because He has no parts. All things true about God are completely true of Him, in totality.