Mark 1:4

1:4 In the wilderness John the baptizer began preaching a baptism of repentance for the forgiveness of sins.

Mark 2:7

2:7 “Why does this man speak this way? He is blaspheming! Who can forgive sins but God alone?”

Mark 3:28

3:28 I tell you the truth, people will be forgiven for all sins, even all the blasphemies they utter.