As a sidepoint, in the New Testament, no where can you find "witnesses of Jehovah" "Jehovah's witnesses" but you will find "witnesses of Jesus" and "witness to Jesus" all over. The WTS in the past has said that in Isaiah 43:10-12, literal jews were being talked about, but that it "foreshadowed" the anointed members of the WTS, as spiritual Israelites.
1950 At this time there is only a small remnant of spiritual Israelites (that only they are of the "Israel of God."
1950 He is not only preparing his remnant of spiritual Israelites for membership in the heavenly kingdom of the new heavens. He is also preparing, the great crowd of “other sheep”, for the visible society of the new earth.
Gradually, the WTS started calling the non-spiritual Israelites (or the great crowd of other sheep) Jehovah's witnesses, and left out the part that there were no witnesses of Jehovah in the New Testament, only witnesses of Jesus. The WTS has gradually put "Jehovah" to the forefront and made Jesus only an object used for the ransom sacrifice. I compared how often the name of Jesus appears in WTS publications compared to using Jehovah, and it was amazing, about 20 to 1 difference, especially in their "kingdom" songs. Even in Acts it says that Jesus' followers came to be known as "Christians" not Jehovah's witnesses. (Acts 11:26) After he found him, he brought him to Antioch. So for a whole year they assembled with them in the congregation and taught quite a crowd, and it was first in Antioch that the disciples were by divine providence called Christians.