Jesus asked, "Who is my mother? Who are my brothers?" 49 Then he pointed to his disciples and said, "These are my mother and brothers. 50 Anyone who does the will of my Father in heaven is my brother and sister and mother!"

For the brothers and sisters who aren't sure if their actions matter or not:

Sheep:
'Master, what are you talking about? When did we ever see you hungry and feed you, thirsty and give you a drink? 38 And when did we ever see you sick or in prison and come to you?' 39 40 Then the King will say, 'I'm telling the solemn truth: Whenever you did one of these things to someone overlooked or ignored, that was me - you did it to me.' 41 "

Goats:
'Master, what are you talking about? When did we ever see you hungry or thirsty or homeless or shivering or sick or in prison and didn't help?' 45 "He will answer them, 'I'm telling the solemn truth: Whenever you failed to do one of these things to someone who was being overlooked or ignored, that was me - you failed to do it to me.' 46 "Then those 'goats' will be herded to their eternal doom, but the 'sheep' to their eternal reward."