John 5:19

Ἀπεκρίνατο οὖν ὁ Ἰησοῦς καὶ ἔλεγεν αὐτοῖς· ἀμὴν ἀμὴν λέγω ὑμῖν, οὐ δύναται ὁ υἱὸς ποιεῖν ἀφ' ἑαυτοῦ οὐδέν, ἂν μή τι βλέπῃ τὸν πατέρα ποιοῦντα· ἃ γὰρ ἂν ἐκεῖνος ποιῇ, ταῦτα καὶ ὁ υἱὸς ποιεῖ ὁμοίως.

Rough Word-by-word:
He answered therefore the Jesus and he was saying to them, "Amen, amen I say to you, not he is able the son to do from himself not anything, if not what he might see the father doing, what things for if he might do, those things also the son he is doing the same."

Smooth Translation:
Therefore Jesus answered and said to them, "Amen, amen I say to you, the son is not able to do anything from himself, except what he might see the father doing. What ever things he might do, the son does those things the same."

Notes:
I found this verse difficult because of all the small particles.

Ἀπεκρίνατο verb aorist middle deponent indicative 3rd singular from αποκρίνομαι (I answer) "he answered"

οὖν post positive conjunction "therefore"

ὁ definite article nominative singular masculine "the"

Ἰησοῦς proper noun nominative singular masculine "Jesus"

καὶ conjunction "and"

ἔλεγεν verb imperfect active indicative 3rd singular from λέγω (I say) "he was saying"

αὐτοῖς pronoun dative plural masculine "to them"

ἀμὴν asseverative particle "truly" (note: BDAG calls it an asseverative particle which means to assert strongly)

ἀμὴν asseverative particle "truly"

λέγω verb present active indicative 1st singular from λέγω (I say) "I say"

ὑμῖν pronoun dative 2nd plural "to you"

οὐ adverb of negation "not"

δύναται verb present passive deponent indicative 3rd singular from δύναμαι (I am able) "he is able"

ὁ definite article nominative singular masculine "the"

υἱὸς noun nominative singular masculine "son"

ποιεῖν verb present active infinitive from ποιέω (I do, I make) "to do"

ἀφ' preposition with genitive "from" (note: the omicron is elided and the rough breathing has contracted with the pi)

ἑαυτοῦ reflexive pronoun genitive 3rd singular "himself"

οὐδέν compound adjective accusative singular neuter "not anything"

ἂν conditional particle "if"

μή adverb of negation "not"

τι relative pronoun accusative singular neuter "what"

βλέπῃ verb present active subjunctive 3rd singular from βλέπω (I see) "he might see"

τὸν definite article accusative singular masculine "the"

πατέρα noun accusative singular masculine "father"

ποιοῦντα present active participle accusative singular masculine "doing"

ἃ relative pronoun plural neuter "what [things]"

γὰρ post positive conjunction "for"

ἂν conditional particle "if"

ἐκεῖνος pronoun nominative singular masculine "he"

ποιῇ verb present active subjunctive 3rd singular from ποιέω (I do, I make) "he might do"

ταῦτα demonstrative pronoun accusative plural neuter "those things"

καὶ adverbial use of the conjunction "also"

ὁ definite article nominative singular masculine "the"

υἱὸς noun nominative singular masculine "son"

ποιεῖ verb present active indicative 3rd singular from ποιέω (I do, I make) "he is doing"

ὁμοίως adverb "the same"