Contradiction with 1 Samuel 28:6
This verse implies that God did not answer Saul, contrasting with the direct healing and response in Luke 6:18.
1 Samuel 28:6: And when Saul enquired of the LORD, the LORD answered him not, neither by dreams, nor by Urim, nor by prophets.
Contradiction with Matthew 13:58
This verse mentions that Jesus did not do many mighty works due to unbelief in Nazareth, in contrast to the healing in Luke 6:18.
Matthew 13:58: And he did not many mighty works there because of their unbelief.
Contradiction with Mark 6:5
Here it is noted that Jesus could do no mighty work except healing a few sick people, showing a limitation not mentioned in Luke 6:18.
Mark 6:5: And he could there do no mighty work, save that he laid his hands upon a few sick folk, and healed [them].
Contradiction with John 5:13
This verse shows Jesus healing at the pool of Bethesda where the healed man did not immediately know it was Jesus, differing in interaction from Luke 6:18.
John 5:13: And he that was healed wist not who it was: for Jesus had conveyed himself away, a multitude being in [that] place. [a multitude...: or, from the multitude that was]