John 5:32

ἄλλος ἐστὶν ὁ μαρτυρῶν περὶ ἐμοῦ, καὶ οἴδατε ὅτι ἀληθής ἐστιν ἡ μαρτυρία ἣν μαρτυρεῖ περὶ ἐμοῦ.

Rough Word-by-word:
Another is the one who testifies concerning me, and you all know that true is the testimony which he testifies concerning me.

Smooth Translation:
Another is testifying about me and you know that the testimony he testifies concerning me is true.

ἄλλος adjective nominative singular masculine "another" (note: This is another "of the same kind," v. s. ἕτερος which would be another "of a different kind."

ἐστὶν verb present indicative 3rd singular from εἰμί (I am) "he is"

ὁ definite article nominative singular masculine "the"

μαρτυρῶν present active participle nominative singular masculine from μαρτυρέω (I testify, I witness) "one who testifies"

περὶ preposition with genitive "about, concerning"

ἐμοῦ pronoun genitive 1st singular "me"

καὶ conjunction "and"

οἴδατε verb perfect active indicative 2nd plural from εἴδω (I know) "you all know" (note: UBS prefers οἴδα, "I know.")

ὅτι conjunction "that, because"

ἀληθής adjective genitive singular feminine "true"

ἐστιν verb present indicative 3rd singular from εἰμί (I am) "it [she] is"

ἡ definite article nominative singular feminine "the"

μαρτυρία noun nominative singular feminine "testimony"

ἣν relative pronoun accusative singular feminine "which"

μαρτυρεῖ verb present active indicative 3rd singular from μαρτυρέω (I testify, I witness) "he testifies"

περὶ preposition with genitive "about, concerning"

ἐμοῦ pronoun genitive 1st singular "me"