And if his understanding fail, have patience with him; and despise him not when thou art in thy full strength.
WEB
If he fails in understanding, have patience with him. Don’t dishonor him in your full strength.
DRC3:15
And if his understanding fail, have patience with him, and despise him not when thou art in thy strength: for the relieving of the father shall not be forgotten.
LXXE
And if his understanding fail, have patience with him; and despise him not when thou art in thy full strength.