Eternity, thus, is of the order of the supremely great; it proves on investigation to be identical with God: it may fitly be described as God made manifest, as God declaring what He is, as existence without jolt or change, and therefore as also the firmly living.
And it should be no shock that we find plurality in it; each of the Beings of the Supreme is multiple by virtue of unlimited force; for to be limitless implies failing at no point, and Eternity is pre-eminently the limitless since (having no past or future) it spends nothing of its own substance.
Thus a close enough definition of Eternity would be that it is a life limitless in the full sense of being all the life there is and a life which, knowing nothing of past or future to shatter its completeness, possesses itself intact for ever. To the notion of a Life (a Living-Principle) all-comprehensive add that it never spends itself, and we have the statement of a Life instantaneously infinite.