Arcana Coelestia #7636
7636. 'In order that you may know that I am Jehovah' means in order that it may thereby be made known to them that the Lord is the only God. This is clear from the meaning of 'in order that you may know' as in order that it may be made known to them. The reason why 'I am Jehovah' means that the Lord is the only God is that Jehovah means He Is, that is, the Source of the Being and Coming-into-Being (Esse et Existere) of all things, which must necessarily be unique and one. For the fact that 'Jehovah' is the Lord, see 1347, 1736, 2921, 3023, 3035, 5663, 6703, 6905, 6945, 6956; and for the fact that the words used here mean that He is the only God, 7401, 7444, 7544, 7598.
Cover
In Genesis 38:14, this signifies truth obscured that pretends to be from good. (Arcana Coelestia 4859) The "high mountains being covered" (Genesis 7:19) signifies that all the good things of charity were extinguished.
(Referenties: Arcana Coelestia 795)