What Name are we to not take in vain or bring to naught and what should we keep in mind when meditating on this command?
Answer From The Annual Reading Schedule - Week 18 Notes For Exodus: Yahweh (Exodus 20:7). To even answer this question in written form accurately requires that you actually use the Name Yahweh. There is a tradition that some follow which involves never saying the Name of Yahweh, but instead some people say "the LORD" or "Adonai" or "HaShem" whenever they see the Name of Yahweh in the Hebrew Scrolls. "Adonai" is a Hebrew word which means "Lord". "HaShem" is a Hebrew word which means "The Name". Neither of those are the same as saying Yahweh (YHWH). We should not take the Name of Yahweh in vain, and we also should not be adding or taking away from Yahweh's words (Deuteronomy 4:2, 12:32, Proverbs 30:6, Revelation 22:18-19). If the Hebrew scrolls say Yahweh, then that is what we should be reading when we see Yahweh. We do not have the right to ignore His Name and pick another word to replace it. In addition, we do not want to live sinful lives while proclaiming the Name of Yahweh either, or do anything that would misrepresent who Yahweh is to others. We want to always live in a way that brings Honor and Esteem to the Name of Yahweh.