1 Corinthians 14:15-17 King James Version (KJV)
15 What is it then? I will pray with the spirit, and I will pray with the understanding also: I will sing with the spirit, and I will sing with the understanding also.
16 Else when thou shalt bless with the spirit, how shall he that occupieth the room of the unlearned say Amen at thy giving of thanks, seeing he understandeth not what thou sayest?
17 For thou verily givest thanks well, but the other is not edified.
Acts 2:6 King James Version (KJV)
6 Now when this was noised abroad, the multitude came together, and were confounded, because that every man heard them speak in his own language.