The text of today appears immediately after the second feeding miracle in the Gospel of Mark, in which Jesus has fed 4000 people with seven loaves and a few fish. The Pharisees demand a sign. The sign they demand is some form of divine authentication. Jesus’ response is to sigh deeply in his spirit, which could be akin to throwing one’s hands up in despair. He refuses to perform a sign. This refusal on the part of Jesus could be interpreted as a sign of Jesus’ rejection of “this generation”. Mark portrays Jesus here as a prophet announcing God’s judgement against this generation.
There are times in our lives when everything seems to go awry. Nothing seems to be going right. At times like these we might keep asking God to give us some sign that he is on our side and cares for us and we might not receive it. It is possible that this might lead us to lose faith and to stop believing. We need to have the courage to believe even without any signs. This is what true faith means.