“The truth is that unsaved Jews do not worship God.”
You are making very broad statements based on a verse out of context. There are many other passages on the subject of God’s identity and the nature of worship. Consider what Jesus said to the Samaritan woman:
John 4:22
You worship what you do not know; we know what we worship, for salvation is of the Jews.
Consider what Paul said the men of Athens:
Acts 17:23
For as I was passing through and considering the objects of your worship, I even found an altar with this inscription: TO THE UNKNOWN GOD. Therefore, the One whom you worship without knowing, Him I proclaim to you.
If Paul could show deference to the idolaters of Athens, saying they worshipped the true God out of chance and ignorance, don’t you suppose that God’s chosen people, Israel, might also worship the True and Living God based on His revelation of Himself in His word?
Not all non-Christian or non-believing Jews are enemies. But your statement makes them seem that way, by labeling them all “antichrist”.
There is a difference between those who KNOWINGLY fight against Christ and those who are merely ignorant. Again, consider what Peter said of his unbelieving fellow Jews:
Acts 3:17
Yet now, brethren, I know that you did it in ignorance, as did also your rulers.
And also, what did Jesus say about those who were ignorant?
Luke 23:34a
Then Jesus said, “Father, forgive them, for they do not know what they do.”
There are people who are antichrist and enemies among all nationalities, including Jewish people. But most people are merely ignorant. Neither Christ nor the apostles treated the lost as enemies due to their unbelief.
Hardly. 1 John 2 addresses sects who claim they have God, but reject the Messiah (God incarnate). This applies specifically to Judaism and Islam which both look forward to a conquering messiah, but reject Jesus Christ.
Jesus is the only Messiah there is. The Jews rejected him when he came in the 1st century AD. They will most likely accept the false messiah that is coming -- the son of perdition -- the antichrist.
When Jesus comes again, he comes to claim his own and pour out his wrath. See Matthew 24 and Mark 13 for Gospel treatments of his return. Revelation is much more detailed treatment. See the first of 22 sermons in this excellent series. Book of Revelation, Chapter 1