Several religions. Christianity, Islam, and the Bahá'í Faith, all accept The Bible (including the New Testament) as Holy Scripture; many other religions don't, including, as far as I know, Judaism, Buddhism, Zoroastrianism, and others.
Christianity shares the Old Testament with Judaism, and the New Testament is specific to Christianity.
The Old Testament authors were Jewish and the New Testament authors Christian, although some of the New Testament authors (Paul, for example) came from a Jewis background.
It is uncertain whether Mahatma Gandhi even knew much about the New Testament, although he is reported to have found the Sermon on the Mount as reminding him of his own Gita. He was a follower of the Jain religion, so no doubt he would have found many of the lessons in the New Testament very familiar, as parallels to the great moral truths taught in his own religion.
This question can be understood in terms of reading only the Old Testament but not the New Testament, or in terms of reading only the Old Testament but nothing else that could contradict or challenge the stories and traditions portrayed in the Old Testament. For a Jew, there is no particular disadvantage in reading the Old Testament but not the New Testament, as the New Testament is not relevant to his religion. For a Christian, the disadvantage is that the books most important to his faith are in the New Testament. Anyone reading only the Old Testament and not what is now known about the history of the times and biblical scholarship on the Old Testament, the disadvantage is that the reader must take everything literally and can not have an informed view as to how literally the Old Testament should be read.
There are 39 books or 46 books in the Old Testament scripture depending on which Biblical canon you accept. The Protestant Bibles have 39 books and the Catholic Bibles have 46 which include an additional 7 Apocrypha books. New Testament cannon is 27 books in both Protestant and Catholic Bibles.
Apart from Christianity, you could say that all other religions do not accept the New Testament. (The religion that accepts the Old Testament, or Hebrew Bible, but not the New Testament, is Judaism.) It is also worth noting that Islam rejects the New Testament as written, but does not reject the spiritual nature of the events it describes. Islam holds the New Testament to be a corrupted form of Jesus's Ministry, something that is very important in Islam.
Judaism
The new Testament is read by the christian believers.
Christianity
At least 600+ years after the New Testament of the Bible was written.
Christianity
The Hebrew people believe only in the old testament. well actually that would imply that anyone who is Hebrew can't be christian, the Jewish religion is what only believes in the old testament, or the Tanach , which by the way has a lot more books in it and is a lot longer than the bible version
Christians as a whole profess to believe in the New Testament which is the bible books of Matthew through Revelation.
religion
Christianity shares the Old Testament with Judaism, and the New Testament is specific to Christianity.
No, Jews do not accept the validity of both the Christian Old and New Testaments. The Jewish Bible is called the Tanach which is what the Old Testament was based on.
Originally, the Jewish people, with the Old Testament. The Christians are also associated with it, but they follow the New Testament