Early Christianity had its origin in the
eschatological ministry of Jesus. After his death, his
initial followers banded together to form an
apocalyptic messianic Jewish sect, known as Judeo-
Christians, during the late Second Temple period in the
1st century. Initially, the prevailing belief was that the
resurrection of Jesus marked the beginning of the end
of times. However, over time, this perspective evolved
into anticipating the second coming of Jesus and the
beginning of the Kingdom of God at a future time.
References: Fredriksen, 2018.
Barnett, Paul (2002). Jesus, the Rise of Early Christianity: A History of New
Testament Times. InterVarsity Press. p. 21. ISBN 0-8308-2699-8.
Alister McGrath, former professor of historical
theology at the University of Oxford, claims that many
of the “Jewish Christians” of the first century were
completely faithful religious Jews.