Ben Sira 8:4

4 Don't make fun of someone who has bad manners; he may insult your ancestors.

Ben Sira 8:4 In-Context

2 Do not quarrel with someone rich; he may bribe people to turn against you. Gold has destroyed many people and corrupted kings.

3 Don't argue with someone who talks too much; you will just be adding fuel to his fire.

4 Don't make fun of someone who has bad manners; he may insult your ancestors.

5 Don't criticize someone if he is already turning away from sin. Remember that we are all guilty.

6 Never think less of someone because he is old; some of us are growing old, too.