In our gospel Jesus says that a prophet is not welcomed in his native place and among his own people and family. Our Lord complains about the lack of faith of the people because he was so familiar to them. The people around him say: Who is this? Who does he think he is? Is he not the son of a carpenter? Didn’t we see him grow up? This familiarity and this routine with Jesus was an excuse for them to be unbelieving.
Jesus was so close to them that they underestimated him; it is in our human nature; we usually underestimate what is familiar to us, what is too close to us, what we think we know. These people thought they knew Jesus but they didn't know him as well as they thought. So familiarity and the daily routine can become an obstacle for us to know God and to recognize that God can work in the ordinary, in ordinary situations and through ordinary people like you and me; we can’t underestimate God’s working power in our daily life, in ordinary situations, in us - ordinary sinners.
God can do amazing things in us and through us if we believe, if we know that he is greater than our ordinariness and that he can change us from being ordinary, being sinful to being extraordinary and being holy.