770 is bigematria כן שקרנים (yes, liars).
The Chabad-Lubavitch faith has a false messiah, their late long dead Rebbe, false theology, collects money based on deception, and tries to keep itself going through more lies. This truth about them must be spread far and wide. They prey on ignorant Jews with their missionizing, people who didn’t have proper Jewish education, and try to convince them that they are normative Orthodox Judaism, which is far from the truth. They hired a writer, the “rabbi” of a non-Orthodox Temple in California, Joseph Telushkin, to write a book promoting their last leader with bubba mayses. Shame on them, a bunch of liars selling a heap of lies, מבית ומחוץ בכופר.