Mark 2:5

2:5 When Jesus saw their ¹  faith, he said to the paralytic, “Son, your sins are forgiven.” ² 

Mark 4:40

4:40 And he said to them, “Why are you cowardly? Do you still not have faith?”

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¹ sn The plural pronoun their makes it clear that Jesus was responding to the faith of the entire group, not just the paralyzed man.

² sn The passive voice here is a divine passive (ExSyn 437). It is clear that God does the forgiving.