We will do a series on the Ten Commandments as written in Sh'mot (Exodus) chapter 20.
אָנֹכִי יְהוָה אֱלֹהֶיךָ
The first word, אָנֹכִי, means "I"
The second word, yod-hey-vav-hey is the four letter name of the holy one, blessed be He. "HaShem" means "the name"
the final word אֱלֹהֶיךָ, ehloHEYkha, is two English words: Elohey is a name for G-d, and kha suffix, if you remember, is the possessive "your"
So altogether: ah-no-KHEE HaShem ehloHEYkha means: I (am) HaShem, your G-d. It is a declaration of who is making the covenant, the authority for the following set of standards.