The OT of the most ancient surviving Christian Bible manuscripts - Codex Vaticanus (4th century), Codex Sinaiticus (4th century) and Codex Alexandrinus (5th century) - are Greek Septuagint text.

THE NEW VARIORUM SEPTUAGINT; Cambridge University's Monumental Edition of the Bible -- Other Religious Works of Unusual Importance.

‘Easter’ is found in English and German but in most other European languages the word for the festival comes from old words for ‘Passover’.