know the certainty # 44_ACT_21_34 # And some cried one thing, some another, among the multitude: and when he could not know the certainty for the tumult, he commanded him to be carried into the castle. 
know the certainty # 42_LUK_01_04 # That thou mightest know the certainty of those things, wherein thou hast been instructed. 
know the certainty # 20_PRO_22_21 # That I might make thee know the certainty of the words of truth; that thou mightest answer the words of truth to them that send unto thee?