For ye know what commandments we gave you by the Lord Jesus.
Berean Study Bible (BSB) - 1 Thessalonians 4:2 >For you know the instructions we gave you by the authority of the Lord Jesus.
Textus Receptus (TR) - 1 Thessalonians 4:2 >Οἴδατε γὰρ τίνας παραγγελίας ἐδώκαμεν ὑμῖν διὰ τοῦ Κυρίου Ἰησοῦ.