JUDE 1: 3-4
Jude 1:3 Beloved ones,
making all haste to write to you concerning our common deliverance, I
felt the necessity to write to you urging you to earnestly contend for
the belief which was once for all delivered to the set-apart ones.
Jude 1:4 For certain men have slipped in, whose judgment was
written about long ago, wicked ones perverting the favour of our Elohim
for indecency, and denying the only Master יהוה and our
Master יהושע Messiah.
Jude (actually Yahudah)
was
referring to the teaching delivered to them by the Messiah himself,
encouraging
them not to let it be changed by anyone.