In the Old Testament, we read that Israel was called the Holy people, the redeemed of the Lord (Isaiah 62:5). The imagery of Bride and Bridegroom was used. Then we read about Israel being the vines in God’s vineyard (Isaiah 5:7). Also in Isaiah we see the imagery of Shepherd and Flock as it relates to God’s Holy Nation.
So Jesus the Christ comes along in the New Testament and states that He is the Bridegroom (Matt 9:15); that He is the true vine and the Good Shepherd (John 10:11 & 14). No wonder the Jewish leaders at the time were so concerned with Him. So as the Jews rejected Jesus as Messiah, He turned to reach the Gentiles. We read in 1 Peter 2:9 & 10, speaking to gentiles: “But you are a chosen people, a royal priesthood, a holy nation, God’s special possession, that you may declare the praises of Him who called out of darkness into His wonderful light. Once you were not a people, but now you are the people of God; once you had not received mercy, but now you have received mercy.”
It is not possible for a Christian to be anti-semitic for we will be united at a time of God’s choosing, Jews and Christians, together as the Holy Nation.