Berean Study Bible (BSB) - 1 Corinthians 14:21 >

It is written in the Law: “By strange tongues and foreign lips I will speak to this people, but even then they will not listen to Me, says the Lord.”

Textus Receptus (TR) - 1 Corinthians 14:21 >

Ἐν τῷ νόμῳ γέγραπται ὅτι Ἐν ἑτερογλώσσοις καὶ ἐν χείλεσιν ἑτέροις λαλήσω τῷ λαῷ τούτῳ, καὶ οὐδ᾿ οὕτως εἰσακούσονταί μου, λέγει Κύριος.