1 Corinthians 14:21

14:21 It is written in the law: “By people with strange tongues and by the lips of strangers I will speak to this people, yet not even in this way will they listen to me,” ¹  says the Lord.

1 Corinthians 14:6

14:6 Now, brothers and sisters, ²  if I come to you speaking in tongues, how will I help you unless I speak to you with a revelation or with knowledge or prophecy or teaching?

¹ sn A quotation from Isa 28:11-12.

² tn Grk “brothers.” See note on the phrase “brothers and sisters” in 1:10.