This is Luke 14 verses 12-14 (NIV):
12Then Jesus said to his host, "When you give a luncheon or dinner, do not invite your friends, your brothers or relatives, or your rich neighbors; if you do, they may invite you back and so you will be repaid. 13But when you give a banquet, invite the poor, the crippled, the lame, the blind, 14and you will be blessed. Although they cannot repay you, you will be repaid at the resurrection of the righteous."
I wonder how many of us can truthfully say that we have lived in accordance with this scripture.