Then Simon Peter, having a sword, drew it and struck the high priest's servant, and cut off his right ear. The servant's name was Malchus.
John 18:10
Surrounding context
18:9 that the saying might be fulfilled which He spoke, "Of those whom You gave Me I have lost none."
18:10 Then Simon Peter, having a sword, drew it and struck the high priest's servant, and cut off his right ear. The servant's name was Malchus.
18:11 So Jesus said to Peter, "Put your sword into the sheath. Shall I not drink the cup which My Father has given Me?"