The Belgic Confession, Article I (5)

It stands to reason, therefore, in the light of what we have said previously (confer May 15 issue) concerning this attribute of God's eternity, that it is ultimately impossible to produce a definition in the true sense of the word. This is in a way true concerning all God's attributes, but especially applies to those attributes which we sometimes call "incommunicable." The truth of God's simplicity, together with the divine incomprehensibility, precludes this. God in His eternity is the...