Exodus 20:2

אשר הוצאתיך מארץ מצרים WHO HAVE BROUGHT THEE OUT OF THE LAND OF EGYPT — That act of bringing you out is alone of sufficient importance that you should subject yourselves to Me. Another explanation: because He had revealed Himself to them at the Red Sea as a mighty man of war and here He revealed Himself as a grey-beard filled with compassion, as it is stated in connection with the Giving of the Law, (Exodus 24:10) “and there was under His feet as it were a brick-work of sapphire”, which is explained to mean that this (the brick-work) was before Him at the time of their bondage; “and there was as the essence of heaven” (i. e. joy and gladness) when they had been delivered (cf. Rashi on Exodus 24:10), thus the Divine Glory changed according to circumstances, — therefore He stated here: Since I change, appearing in various forms, do not say, “There are two divine Beings”; it is I Who brought you forth from Egypt and Who appeared to you at the Sea (cf. Mekhilta). Another explanation: because they then heard many voices, as it is said (v. 15) “the people heard the voices (הקלות)” — voices coming from the four cardinal points and from the heavens and from the earth — therefore God said to them, “Do not say there are many Deities”. — Why did God say in the singular אלהיך, “Thy God”, (as though speaking to one person alone)? To afford Moses an opportunity to speak in defence of Israel at the incident of the golden calf. This, is exactly what he did say, (Exodus 32:11) “Wherefore, O Lord, doth Thy wrath glow against Thy people”, for not to them didst Thou give the command, “There shall be to thee no other gods” but to me alone! (Exodus Rabbah 43:5) מבית עבדים OUT OF THE HOUSE OF SLAVES — This means, from the house of Pharaoh where ye were slaves to him. Or perhaps it only says “from the house of slaves” in the sense of a house belonging to slaves to that the words imply that they were slaves to slaves (a most abject form of slavery)! But elsewhere it states, (Deuteronomy 7:8) “He redeemed thee from the house of slaves, from the hand of Pharaoh, king of Egypt”, so that you must now admit that they were slaves of the king and not slaves to slaves and the meaning is: from the house where you were slaves (Mekhilta).

אָֽנֹכִ֖י֙ יְהֹוָ֣ה אֱלֹהֶ֑֔יךָ אֲשֶׁ֧ר הוֹצֵאתִ֛יךָ מֵאֶ֥רֶץ מִצְרַ֖יִם מִבֵּ֣֥ית עֲבָדִ֑͏ֽים׃

I am the Lord thy God, who have brought thee out of the land of Miżrayim, out of the house of bondage.