Be stedfast in thy understanding; and let thy word be the same.
GNV1560
Sirach 5:10
Stand fast in thy sure vnderstanding [& in the way and knowledge of the Lord] & haue but one maner of worde, [& followe the worde of peace and righteousnes.
Parallel Translations
Be stedfast in your understanding; and let your word be the same.
Be stedfast in thy understanding; and let thy word be the same.
Be steadfast in your understanding. Let your speech be consistent.