Proverbs 25:9

Have a talk with your neighbour himself about your cause, but do not give away the secret of another:

Proverbs 11:13

He who goes about talking of others makes secrets public, but the true-hearted man keeps things covered.

Proverbs 20:19

He who goes about talking of the business of others gives away secrets: so have nothing to do with him whose lips are open wide.

Matthew 18:5-17

And whoever gives honour to one such little child in my name, gives honour to 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 gives honour to one such little child in my name, gives honour to me:

A secret to another

Proverbs 11:13
He who goes about talking of others makes secrets public, but the true-hearted man keeps things covered.
Proverbs 20:19
He who goes about talking of the business of others gives away secrets: so have nothing to do with him whose lips are open wide.

General references

Proverbs 3:30
Do not take up a cause at law against a man for nothing, if he has done you no wrong.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain