Shechinah means in the bible: The Presence. The Presence. A term used by later Jews, borrowed by Christians from them to refer to the cloud of glory and brightness that marked the Lord’s presence. Ex. 3:1-6; 24:16; 1 Kgs. 8:10; Isa. 6:1-3; Matt. 17:1-3; Matt. This phenomenon was described by the Prophet Joseph Smith in relation to his First Vision. He said that it appeared as “light…above the brightness of sunlight” and that he witnessed two Personages “in the light”. JS-H 1:16-18
(in Bible Dictionary)