Westminster Larger Catechism

The preface to the ten commandments is contained in these words, I am the Lord thy God, which have brought thee out of the land of Egypt, out of the house of bondage.⁴³⁶ Wherein God manifesteth his sovereignty, as being JEHOVAH, the eternal, immutable, and almighty God;⁴³⁷ having his being in and of himself,⁴³⁸ and giving being to all his words⁴³⁹ and works:⁴⁴⁰ and that he is a God in covenant, as with Israel of old, so with all his people;⁴⁴¹ who, as he brought them out of their bondage in Egypt, so he delivereth us from our spiritual thraldom;⁴⁴² and that therefore we are bound to take him for our God alone, and to keep all his commandments.⁴⁴³