Blessing the Nations (Matthew 15:29-39)

Christ feeds his people as they come out to receive his teaching.  This is literally accomplished when Christ feeds the 5000 people.  Christ primarily feeds Israel .  Christ clearly communicates through this feeding that we will be satisfied in the Lord.  Why does the Lord perform this feeding a second time? Is Christ affirming that the first feeding was insufficient?  Why feed two crowds? 

Purposely Defiled by Sinners? (Mark 8:1-21)

You would think that Christ would figure out that if he just worked with the leaders of Israel a little bit then His life would be easier.  So, why does Christ purposely dine with unclean people after having been rebuked?  Why not just give a little sign when he is asked for a sign?  Why such a harsh warning for His disciples?