<p>5:9 <i>A little leaven leavens the whole lump</i>- The problem in Galatia had been caused by a very small group (&quot;the one who is troubling you&quot;, :10) or an apparently insignificant doctrine. But it was destroying the while community; although this was because the idea of salvation by works was so attractive. The Lord had spoken of the teaching of the Pharisees as &quot;leaven&quot; (Mk. 8:15). In the more immediate context, Paul may mean that once you demand legal obedience to one law, in this case circumcision, then this leads to a need for obedience to the entire Law. The idea being that small beginning has huge consequences.</p>