Kutoka 6 : 3 Exodus chapter 6 verse 3

nami nilimtokea Ibrahimu, na Isaka, na Yakobo, kama Mungu Mwenyezi, bali kwa jina langu YEHOVA sikujulikana kwao.
soma Mlango wa 6

and I appeared to Abraham, to Isaac, and to Jacob, as God Almighty; but by my name Yahweh I was not known to them.