I keep hearing that Sac does not scale with anything and that it is flat damage. Well I did some research and it appears to scale with +str.
These are rough numbers since I am not in front of my game now.
Bare Fist + sacrament did 160 damage on the 2nd hit to a mob in Baron Allermo
War Pick + sac did 160 damage
Silver Falchion + sac did 200 damage
Since the S.Falchion has +20 str, the only reason damage on the 2nd hit would increase would be if sacrament scaled with +str.
This information has been tested to be false by the community

