1 Corinthians 14:7-8

Context
14:7 It is similar for lifeless things that make a sound, like a flute or harp. Unless they make a distinction in the notes, how can what is played on the flute or harp be understood? 14:8 If, for example, the trumpet makes an unclear sound, who will get ready for battle?

1 Corinthians 14:20

Context

14:20 Brothers and sisters, ¹  do not be children in your thinking. Instead, be infants in evil, but in your thinking be mature.