Sirach 3:11-13

Revised Standard Version Catholic Edition

¹¹ For a man’s glory comes from honoring his father,
    and it is a disgrace for children not to respect their mother.
¹² O son, help your father in his old age,
    and do not grieve him as long as he lives;
¹³ even if he is lacking in understanding, show forbearance;
    in all your strength do not despise him.