Untrained (3 Occurrences)

Acts 4:13 As they looked on Peter and John so fearlessly outspoken--and also discovered that they were illiterate persons, untrained in the schools--they were surprised; and now they recognized them as having been with Jesus. (WEY NAS)

Jeremiah 2:24 An untrained ass, used to the waste land, breathing up the wind in her desire; at her time, who is able to send her away? all those who are looking for her will have no need to make themselves tired; in her month they will get her. (BBE)

Jeremiah 31:18 I have surely heard Ephraim bemoaning himself thus , Thou hast chastised me, and I was chastised, as a calf unaccustomed to the yoke : turn thou me, and I shall be turned; for thou art Jehovah my God. (See JPS NAS RSV)