In Isaiah 6:3 we read that seraphim in the heavenly temple cried out “Holy, holy, holy is YHWH of hosts – the whole earth is full of His glory”. Then, in Revelation 4:8, we find four strange beasts declaring day and night, “Holy, holy, holy, Lord GOD Almighty, which was, and is, and is to come”. These two passages are the only places in Scripture where we see YHWH called holy with a triple exclamation. In fact, no other attribute is declared in triple form like this. Clearly He is the Holy one! But that begs the question – what is meant by “holy”?