Parallel
2 Thessalonians 2:15
Robinson-Pierpont Byzantine Textform · Berean Standard Bible
Ἄρα οὖν, ἀδελφοί, στήκετε, καὶ κρατεῖτε τὰς παραδόσεις ἃς ἐδιδάχθητε, εἴτε διὰ λόγου, εἴτε δι’ ἐπιστολῆς ἡμῶν.
Therefore, brothers, stand firm and cling to the traditions we taught you, whether by speech or by letter.