Do Jews believe in the new testament of the holy bible?

Some Jews will read the Christian Bible out of curiOSity or comparative religious scholarship. However, neither parts of the Christian Bible (Old and New Testaments) are considered valid religious texts by Jews.

The Jewish Bible is called the Tanach (an acronym made up of the names of the three sections it's made up of - Torah [Teachings], Nevi'im [Prophets], K'tuvim [Writings].

The Christian OT is based on the Tanach, however, it was greatly altered to support the teachings of Christianity.