Did the Jews in Isaiah`s day Isa.43:10-12 have any idea about a spiritual Israel ? Wouldnt they have understood naturally that scripture applied to them as a people ?
Yet they never took on the name Jehovah`s Witnesses or called themselves such
And Jesus never rebuked them for not doing so .
Their is not one scripture in the New Testament that says Jesus Disciples are to be witnesses of Jehovah yet their are about 30 that state his disciples are to be witnesses of Jesus.
Note : the name Jehovah didnt exist before the 13th Century it was represented by 4 Hebrew letters YHWH
and nowhere in the New Testament do these four Hebrew letters exist,so no "Jehovah" in the New Testament