But refuse younger widows, for when they have grown wanton against Christ, they desire to marry;

 They must have washed the feet of the saints. That need not be taken literally, although the literal sense is included. To wash a person's feet was the task of a slave, the most menial of duties. This means that Christian widows must have been willing to accept the humblest tasks in the service of Christ and of his people. The Church needs its leaders who will live in prominence; but no less it needs those who are prepared to do the tasks which receive no prominence and little thanks. 