YHWH means 'I am' and is used to describe the self-existent God. But it is also used to repeat the meaning of 'Elohim'. It says in notarikon, "His thoughts י are not understood הand ה and his ways ו are not understood ה." <ref>[[Isa 55:8]] For my thoughts are not your thoughts, neither are your ways my ways, saith the LORD.</ref> <ref>[[Isa 55:9]] For as the heavens are higher than the earth, so are my ways higher than your ways, and my thoughts than your thoughts.</ref>  When you teach children language, you say the same thing in different ways, to help build the cognitive connections required for understanding. The expansion of 'Elohim' into 'YHWH Elohim' is the same type of subtle expansion as 'heaven' שמים into 'the Spirit of God ש moved on the face of the waters מים' <ref>[[Ge 1:2]] And the earth was without form, and void; and darkness [was] upon the face of the deep. And the Spirit of God moved upon the face of the waters.</ref> and 'In the beginning' בראשית understood as 'created ברא six שית', as the rest of the chapter details the creation in six days. =p2 ''yom''=Unfortunately saying that ''yom'' is always a 24 hour day is a very subtle use of circular reasoning. The controversy on the use of the word concerns that very issue. To plainly state his reasoning::1. Gen 1 has 'numbered days'.:2. Everywhere (including Ge 1) there are numbered days, they are 24 hour days.:3. Therefore when used in Genesis, 'yom' is a 24 hour day. Observe that on the seventh day God rested. Did he only rest one 24 hour day? Psalm 95:11 suggests that Gods rest lasted until the time of the Hebrews; it was something to be entered in to. <ref>[[Ps 95:11]] Unto whom I sware in my wrath that they should not enter into my rest.</ref> Paul suggests the God's rest was till something to be entered in to in Heb 4:1. <ref>[[Heb 4:1]] ¶ Let us therefore fear, lest, a promise being left [us] of entering into his rest, any of you should seem to come short of it.</ref>