Mark 15:27

And with him they crucify two thieves; the one on his right hand, and the other on his left.

Cross-references

Matthew 27:38 gives the same detail of two robbers crucified on either side of Jesus.

Luke 23:32 mentions two criminals led with Jesus to crucifixion, setting up the same scene.

Luke 23:33 records the crucifixion of Jesus with criminals on his right and left, matching Mark.

John 19:18 places Jesus in the center between the two others, highlighting his unique position.