Pretty good tactic
Invent a religion that hates Christians
Get someone else to do your dirty work for you
Say, see my hands are clean
If Jews are descendants of Abraham, then yes, only by a different mother named Hagar, who was an Egyptian slave of Sarah.
Brothas with different mothas.
Sarah had Isaac
Hagar had Ishmael; they were banished when Ishmael made fun of Isaac at his weening celebration.