@ SBF - I prefer to reason on different Bibles, rather than the NWT.
Ignoring the 28 scriptures about witnessing for Jesus is disingenuous. Two of them even say that the holy spirit and God bore witness for him.The NIV expresses your quoted scriptures far better:
Acts 15:14 - Simon has described to us how God first intervened to choose a people for his [Jesus'] name from the Gentiles. (Acts 11:26 - The disciples were called Christians first at Antioch) NIV
Acts 15:17 - that the rest of mankind may seek the Lord, [Jesus] even all the Gentiles who bear my name, [Christians] says the Lord, [Jesus] NIV
Matthew 1:21 - She will give birth to a son, and you are to give him the name Jesus, because he [Jesus] will save his people [Christians] from their sins.”