Life does not come and go, for Life is God, and every living thing exists in Life, witnessing to an eternally conscious creator. Christian Science reveals the continuing presence of all that actually lives. Mary Baker Eddy says in "Unity of Good" (p. 61): "Coming and going belong to mortal consciousness. God is 'the same yesterday, and to-day, and forever.'" Because God is ever-present, indestructible Life, His expression, man, is eternally present and alive. What is needed is the spiritual refinement to discern this.
The fact is that the coming and going of flesh, its birth, its conditions, and even its death, are illusions, which never touch the genuine life they seem to hide. The good apparent in human beings gives us an inkling of what man really is—individualized joy and intelligence and all divinely derived characteristics and activities. These living elements of real manhood can never become extinct because their source is inextinguishable. They are not adherent to man but inherent in him, inasmuch as he is constituted of them. They radiate from God, deathless Mind, and are inseparable from their source. The afterglow of a life devoted to good, leaving its ineffaceable impress on human consciousness, hints the eternal presence of individual spiritual man.
It is this evidence of real life, permeating the mental density of the personal material sense of existence, that lifts human associations to high spiritual levels, thus ushering in the kingdom of heaven. Spiritual sense alone receives the evidence of immortal man's presence, and to spiritual sense this evidence cannot be lost. Man exists in divine Mind as its idea, and to be conscious of man's presence one must be conscious of God's presence.