<p>26:74&nbsp;<i>Then he began</i>- The implication could be that he began to call down the curses of eternal condemnation and rejection at judgment day upon himself, but the crowing of the rooster made him stop.</p><p><i>To curse</i>- Not with expletives, but a declaration of himself as anathema to God and Messiah if he was on the side of Jesus. The Greek&nbsp;<i>kata-anathematizo&nbsp;</i>means just that; to declare oneself anathema, to exclude oneself from the body of God&rsquo;s people.</p><p><i>And to swear</i>- Peter was in total disobedience to the Lord&rsquo;s teaching: &ldquo;Swear not at all&rdquo; (5:34,36 s.w.). See on 26:72&nbsp;<i>With an oath</i>.</p><p><i>I do not know the man And immediately the cock crowed</i>- See on :70&nbsp;<i>I know not.</i></p>