And they watched him, whether he would heal him on the sabbath day; that they might accuse him. They watched him - Παρετηρουν αυτον, they maliciously watched him. See on Luke 14:1 (note).
Related Commentaries of Mark 3:2
Mark 3:2
2 And they watched him, whether he would heal him on the sabbath day; that they might accuse him.