Luke 5:20

καὶ ἰδὼν τὴν πίστιν αὐτῶν εἶπεν· ἄνθρωπε, ἀφέωνταί σοι αἱ ἁμαρτίαι σου.

And seeing their faith he said O man, your sins are forgiven you.


 * ἰδὼν - is a aorist active participle nominative masculine 3P sg. This is to match the subject of the sentence "he" (Jesus).
 * τὴν πίστιν αὐτῶν - Jesus saw the faith of "them", that is, the faith of the friends who let the sick man down from the roof, not just the faith of the sick man.
 * ἄνθρωπε - vocative for man.
 * ἀφέωνταί - is perfect passive indicative 3P pl. Plural because it refers to the man's sins. Passive - the footnotes in the NET bible say this is to emphasise the passivity of receiving forgiveness, because it is God who does the forgiving.
 * αἱ ἁμαρτίαι - the sins. Notice this is nominative. This is the subject of the sentence. The subject does not do the forgiving, the subject gets forgiven. The man is the indirect object.