It is usually dated through the eschatological discourse in Mark 13, which scholars interpret as pointing to the First Jewish–Roman War (66–74 AD)—a war that led to the destruction of the Second Temple in AD 70. This would place the composition of Mark either immediately after the destruction or during the years immediately prior.
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Jews and Christians have not observed Leviticus’s instructions for animal offerings since the 1st century AD, following the destruction of the Second Temple in Jerusalem in 70 AD. As there was no longer a Temple at which to offer animal sacrifices, Judaism pivoted towards prayer and the study of the Torah, eventually giving rise to Rabbinic Judaism.