We name time when we say: every thing has its time. This means: everything which actually is, every being comes and goes at the right time and remains for a time during the time allotted to it. Every thing has its time.
Man is not the lord of beings. Man is the shepherd of Being.
The human being is not the lord of beings, but the shepherd of Being.
Time is not a thing, thus nothing which is, and yet it remains constant in its passing away without being something temporal like the beings in time.