Rashi on Deuteronomy 5:7/רש"י על דברים ה׳:ז׳

1על פני BEFORE ME — i.e. in any place where I am, and that is the entire world. Another explanation: so long as I exist (i.e. always) (Mekhilta). — The Ten Commandments — I have already explained them (Exodus 20:1-14).