Jeremiah 31:3 The Lord appeared to us in the past,[a] saying: “I have loved you with an everlasting love; I have drawn you with unfailing kindness. 4 I will build you up again, and you, Virgin Israel, will be rebuilt. Again you will take up your timbrels and go out to dance with the joyful.
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The Bible using ''virgin Israel'' means comparison. It's comparing how one must deny/purge their old sinful ways and move in God's pure and holy nature just like the purity of a virgin.