Luke"s singular reference to an hour passing reflects his interest in the passing of time. The third accusation-this one spoken with conviction-came from another Prayer of Manasseh , a relative of the man whose ear Peter had cut off ( John 18:26). Luke omitted the oaths that Peter added to this denial ( Matthew 26:74; Mark 14:71). He also wrote that Peter denied knowledge of what the accuser meant, apparently in addition to his denying that he knew Jesus ( Matthew 26:74; Mark 14:71). Immediately the cock crowed as Jesus had predicted ( Luke 22:34). [source][source][source]