Who is for or against Jesus?
Those who are not with Jesus are against him. Those who are not against Jesus are for him.
Matthew 12:30, Luke 11:23
He that is not with me is against me.
Mark 9:40
For he that is not against us is on our part.

Luke 9:50
For he that is not against us is for us.
Jesus' friends and foes

Christian Responses
LookingUntoJesus.net
Annotated Skeptic's Annotated Bible: Because he had done these things on the Sabbath day (Matthew 12)