Markus 3:5

3:5 After looking around ¹  at them in anger, grieved by the hardness of their hearts, ²  he said to the man, “Stretch out your hand.” He stretched it out, and his hand was restored. ³ 

Markus 6:52

6:52 because they did not understand about the loaves, but their hearts were hardened.

Markus 16:14

16:14 Then he appeared to the eleven themselves, while they were eating, and he rebuked them for their unbelief and hardness of heart, because they did not believe those who had seen him resurrected.

[3:5]  ¹ tn The aorist participle περιβλεψάμενος (peribleyameno") has been translated as antecedent (prior) to the action of the main verb. It could also be translated as contemporaneous (“Looking around…he said”).

[3:5]  ² tn This term is a collective singular in the Greek text.

[3:5]  ³ sn The passive was restored points to healing by God. Now the question became: Would God exercise his power through Jesus, if what Jesus was doing were wrong? Note also Jesus’ “labor.” He simply spoke and it was so.