Strongs Concordance. Have you ever used it? The link number explains the Greek word.
Revelation 1 reveals Jesus is God. The Father, Son and Holy Spirit are God. One God, three persons.
There's only one First and Last. You can't ignore that Scripture. Revelation 1:7-8 is a big problem for the Watchtower.
Another big problem for you guys is the last chapter of Revelation. There is only one person speaking here. Jesus.
Revelation 22:12-16
12"Look, I am coming soon! My reward is with me, and I will give to each person according to what they have done. 13 I am the Alpha and the Omega, the First and the Last, the Beginning and the End.
14 “Blessed are those who wash their robes, that they may have the right to the tree of life and may go through the gates into the city. 15 Outside are the dogs, those who practice magic arts, the sexually immoral, the murderers, the idolaters and everyone who loves and practices falsehood.
16 “I, Jesus, have sent my angel to give you[
a] this testimony for the churches. I am the Root and the Offspring of David, and the bright Morning Star.”
You can't honestly ignore those verses and claim to be a Bible student.