American Standard Version (ASV):
Behold, ye fast for strife and contention, and to smite with the fist of wickedness: ye fast not this day so as to make your voice to be heard on high.
King James Version (KJV):
Behold, ye fast for strife and debate, and to smite with the fist of wickedness: ye shall not fast as [ye do this] day, to make your voice to be heard on high.