The Lord - In the Hebrew text of Leviticus, Jehovah יהוה yehovâh is the name by which God is usually called. Where אלהים 'ĕlohı̂ym occurs, it is generally with a possessive pronoun, so as to designate Him as the God of the chosen people (Leviticus 2:13; Leviticus 11:45; Leviticus 18:21; Leviticus 19:12, Leviticus 19:14, Leviticus 19:32, etc.).
The tabernacle of the congregation - Rather, the tent of meeting. See Exodus 22:21 note. When Jehovah (Yahweh) was about to give His people the Law of the Ten Commandments Exodus 19:3 He called to Moses from the top of Mount Sinai in thunders and lightnings and a thick cloud. When He was now about to give them the laws by which their formal acts of worship were to be regulated, He called to Moses out of the tabernacle which had just been constructed at the foot of the mountain. Exodus 25:22.