Luke 14:12-14 (NRSV)
12 He said also to the one who had invited him, ‘When
you give a luncheon or a dinner, do not invite your friends or your
brothers or your relatives or rich neighbours, in case they may
invite you in return, and you would be repaid.
13 But when you give a banquet, invite the poor, the crippled,
the lame, and the blind.
14 And you will be blessed, because they cannot repay you,
for you will be repaid at the resurrection of the righteous.’