I believe the text implies that fulfilling arbitrary cultural requirements are not necessary or even relevant in receiving God's graces. God is much bigger than rules.
Substance supplants form. In fact, God is so big that even when we miss the mark in fulfilling substantive duties, God is still with us.
This is a comfort to us as we inevitably fall short by not fully standing with the poor or comforting that obnoxious motorcycle-vrooming-at-midnight neighbor who dropped a wrench on his big toe. And it hurts.