JW’s teach that before His earthly life, Jesus was a spirit creature- Michael the archangel, who was created by God and became the Messiah at His baptism. They hold that Jesus is a mighty one, although not almighty as Jehovah God is. According to John 1:1 in their Bible, (The New World Translation), Christ is “a god,” but not “the God.” They teach that Jesus “was and is and always will be beneath Jehovah” and that “Christ and God are not coequal”.
In the OT Isaiah wrote about seeing YHWH in Isaiah 6:1-10. In John 12:31-42, we are told that Isaiah saw Jesus’ glory and spoke of Him. In Exodus 34:14 we are to worship no one but YHWH. In Hebrews 1:6 the angels worship Christ. In Isaiah 44:6 YHWH is called the first and the last (confirmed in Revelation 1:8), but in Revelation 22:13 Christ is the first and the last. Thus we can see that the Father & the Son are “One”. The deity of Christ is clear in Scripture: In Matthew 1:23, Christ is called “Immanuel,” which means “God with us.”
When Thomas touched Jesus’ wounds, after the resurrection, he exclaimed, “My Lord and my God” (John 20:28). There is no basis whatsoever for saying, as some JW’s say, that Thomas was referring to Christ when he said “my Lord,” but was referring to God (Jehovah) when he said “my God.” Instead, Thomas called Christ both his Lord and his God. And Christ did not correct him! Colossians 2:9 clearly confirms the deity of Christ when it states that in Him “all the fullness of the divine quality dwells bodily” (New World Translation). Stephen called Jesus “Lord” (Acts 7:59,60), and we are to confess Jesus as Lord (Rom. 10:9; I Cor. 12:3). “Lord” in these verses is Kurios, which is the Greek word for Jehovah in the Septuagint, the Greek version of the Old Testament. It is evident from this that Christ the Lord (kurios) is Jehovah God.