What is God?
God is a spirit, whose being, wisdom, power, holiness, justice, goodness, and truth are infinite, eternal, and unchangeable.
See:
John 4:24
Ex. 3:14, Ps. 90:2, Mal. 3:6, Jas. 1:17, Kgs. 8:27, Jer. 23:24, Is. 40:22
Ps. 147:5, Rom 16:27
Gn. 17:1, Rv. 19:16