John 1:51

καὶ λέγει αὐτῷ· ἀμὴν ἀμὴν λέγω ὑμῖν, ὄψεσθε τὸν οὐρανὸν ἀνεῳγότα καὶ τοὺς ἀγγέλους τοῦ θεοῦ ἀναβαίνοντας καὶ καταβαίνοντας ἐπὶ τὸν υἱὸν τοῦ ἀνθρώπου.

Rough Word-by-word:
And he says to him, "Truly truly I say to you, 'You will see the heaven having been opened and the angels the of God as they are going up and as they are going down on the son the of man.'"

Smooth Translation:
And he said to him, "Truly, truly I say to you, "You will see heaven opened and the angels of God going up and going down on the Son of Man.'"

καὶ conjunction "and"

λέγει verb present active indicative 3rd singular from λέγω (I say) "he says"

αὐτῷ pronoun dative masculine singular "to him"

ἀμὴν adverb transliterated from the Hebrew אָמֵן (confirm/support) "truly" (In Habakkuk 2, this is the root for the word to describe what the just shall live by - "faith.")

ἀμὴν adverb transliterated from the Hebrew אָמֵן (confirm/support) "truly"

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

ὑμῖν pronoun dative 2nd plural "to you"

ὄψεσθε verb future middle indicative from ὁράω (I see) "you will see"

τὸν definite article accusative masculine singular "the"

οὐρανὸν noun accusative masculine singular "heaven"

ἀνεῳγότα perfect active participle accusative masculine singular from ἀνοίγω (I open) "having been opened" (I had to look this form up)

καὶ conjunction "and"

τοὺς definite article accusative masculine plural "the"

ἀγγέλους noun accusative masculine plural "angels"

τοῦ definite article genitive masculine singular "the"

θεοῦ noun genitive masculine singular "of God"

ἀναβαίνοντας present active participle accusative masculine plural from ἀναβαίνω (I go up) "as they are going up"

καὶ conjunction "and"

καταβαίνοντας present active participle accusative masculine plural from καταβαίνω (I go down) "as they are going down"

ἐπὶ preposition with accusative "on"

τὸν definite article accusative masculine singular "the"

υἱὸν noun accusative masculine singular "son"

τοῦ definite article genitive masculine singular "the"

ἀνθρώπου noun genitive masculine singular "man"