Isaiah 53 speaks of the people of Israel, not Jesus (or any Messiah).

Isaiah 7:14 does not prophesy a virgin birth! And it has nothing whatsoever to do with Jesus, since it dealt with a crisis seven hundred years before he was born.

The only thing that keeps many people in the Christian faith—including Jews—is a fear of hell

I find much beauty in the teachings of Jesus, and I think there are some good arguments in favor of Christianity. But I find it impossible to believe in a religion that condemns all people to hell—including many moral, good, kind, and sensitive people, not to mention countless millions of religious Jews, Muslims, Hindus, and Buddhists—simply because they don’t believe in Jesus. I can’t follow a religion whose God tortures people in flames forever for not believing in someone they never even heard of.

Christianity calls on its followers to exhibit unnatural emotions and feelings such as love for their enemies. This is contrary to the Torah as well as human nature.

Judaism is a healthy religion. Jews don’t see the world as intrinsically evil or denounce marriage or call for self-renunciation. Christians, on the other hand, see the world as evil, advocate celibacy, and say, “Deny yourself, take up your cross, and suffer.”