Jesus Says Preach to the Jew First Then to the Gentile so How is Christmas at Winter Solstice a Good Witness?

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If Christians around the world would observe the Feast of Tabernacles by celebrating Jesus’ birth at that time, when it really happened, the lesson that Jesus Christ is Emmanuel (with us is Elohim) will impress millions of Jews around the world, perhaps prompting many of them to accept their Messiah.