In light of the odium commonly hurled against classical Protestant doctrine by modern Protestant theologians it is interesting to compare one of Augustine’s definitions of God with that of the Westminster Divines:
Most highest, most good, most potent, most omnipotent; most merciful, yet most just; most hidden, yet most present; most beautiful, yet most strong, stable, yet incomprehensible; unchangeable, yet all-changing; never new, never old; all-renewing, and bringing age upon the proud, and they know it not; ever working, ever at rest; still gathering, yet nothing lacking; supporting, filling, and overspreading; creating, nourishing, and maturing; seeking, yet having all things. Thou lovest, without passion; art jealous, without anxiety; repentest, yet grievest not; art angry, yet serene; changest Thy works, Thy purpose unchanged; receivest again what Thou findest, yet didst never lose; never in need, yet rejoicing in gains; never covetous, yet exacting usury. Thou receivest over and above, that Thou mayest owe; and who hath aught that is not Thine? Thou payest debts, owing nothing; remittest debts, losing nothing.
—Augustine, Confessions I.4.
God is a Spirit, in and of himself infinite in being, glory, blessedness, and perfection; all-sufficient, eternal, unchangeable, incomprehensible, every where present, almighty, knowing all things, most wise, most holy, most just, most merciful and gracious, long-suffering, and abundant in goodness and truth.
—Westminster Larger Catechism 7; cf. Westminster Confession of Faith II.