<p>16:11<i> How is it that you fail to understand that I did not speak about bread? Beware of the yeast of the Pharisees and Sadducees- </i>The disciples were rebuked as being &quot;of little faith&quot; in the matter of not&nbsp;<i>understanding</i>&nbsp;the Lord's teaching about leaven (Mt. 16:8-11). It has been commented that the sayings of Jesus &quot;are everywhere too subtly penetrated with theological claims and dogmatical instruction for the distinction commonly drawn between Christian &quot;ethics&quot; and Christian &quot;dogma&quot; to be other than forced or artificial&quot;. His doctrines lead to His practice. Doctrine is likened by the Lord to yeast- it is going to affect the holder of it (Mt. 16:11,12).</p>