Rei

"Friendly, one who maintained true allegiance to king David (1" Kings 1:8) when Adonijah rebelled.

"The kidneys, the supposed seat of the desires and affections;" "used metaphorically for "heart." The "reins" and the "heart" are" "often mentioned together, as denoting the whole moral" "constitution of man (Ps. 7:9; 16:7; 26:2; 139:13; Jer. 17:10," etc.).

Definition of Rei:
"my shepherd; my companion; my friend"