Proverbs 25:9

Argue your argument with your neighbor [himself], the secret of another do not disclose,

Proverbs 11:13

A gossip walks [about] telling a secret, but the trustworthy in spirit keeps [the] matter.

Proverbs 20:19

He reveals a secret, he who walks [about with] gossip, and do not associate with a babbler's lips.

Matthew 18:5-17

and whoever welcomes one child such as this in my name welcomes me.

Treasury of Scripture Knowledge

Summary

Debate thy cause with thy neighbour himself; and discover not a secret to another:

A secret to another

General references

Bible References

With

Matthew 18:5
and whoever welcomes one child such as this in my name welcomes me.

A secret to another

Proverbs 11:13
A gossip walks [about] telling a secret, but the trustworthy in spirit keeps [the] matter.
Proverbs 20:19
He reveals a secret, he who walks [about with] gossip, and do not associate with a babbler's lips.

General references

Proverbs 3:30
Do not quarrel with anyone without cause, when he did not do you harm.