Comparison of Nicene Creeds of 325 and 381

The Nicene Creed was originally composed at the First Council of Nicaea in 325, and subsequently revised at the Second Ecumenical Council (the First Council of Constantinople) in 381. The following table displays side by side both forms of this Creed in the English translation given in Schaff's Creeds of Christendom, which indicates by brackets the portions of the 325 text that were omitted or moved in 381, but uses no typographical mark to indicate what phrases, absent in the 325 text, were added in 381.

First Council of Nicea (325)	First Council of Constantinople (381)
We believe in one God, the Father Almighty, Maker of all things visible and invisible.	We believe in one God, the Father Almighty, Maker of heaven and earth, and of all things visible and invisible.
And in one Lord Jesus Christ, the Son of God, begotten of the Father [the only-begotten; that is, of the essence of the Father, God of God], Light of Light, very God of very God, begotten, not made, being of one substance with the Father;	And in one Lord Jesus Christ, the only-begotten Son of God, begotten of the Father before all worlds (æons), Light of Light, very God of very God, begotten, not made, being of one substance with the Father;
by whom all things were made [both in heaven and on earth];	by whom all things were made;
who for us men, and for our salvation, came down and was incarnate and was made man;	who for us men, and for our salvation, came down from heaven, and was incarnate by the Holy Ghost of the Virgin Mary, and was made man;
he suffered, and the third day he rose again, ascended into heaven;	he was crucified for us under Pontius Pilate, and suffered, and was buried, and the third day he rose again, according to the Scriptures, and ascended into heaven, and sitteth on the right hand of the Father;
from thence he shall come to judge the quick and the dead.	from thence he shall come again, with glory, to judge the quick and the dead;
	whose kingdom shall have no end.
And in the Holy Ghost.	And in the Holy Ghost, the Lord and Giver of life, who proceedeth from the Father, who with the Father and the Son together is worshiped and glorified, who spake by the prophets. In one holy catholic and apostolic Church; we acknowledge one baptism for the remission of sins; we look for the resurrection of the dead, and the life of the world to come. Amen.
[But those who say: 'There was a time when he was not;' and 'He was not before he was made;' and 'He was made out of nothing,' or 'He is of another substance' or 'essence,' or 'The Son of God is created,' or 'changeable,' or 'alterable' — they are condemned by the holy catholic and apostolic Church.]

The following table presents in the same way the texts of the two Councils, as given in the original Greek language on the Web site Symbolum Nicaeno-Constantinopolitanum - Greek:

First Council of Nicea (325)	First Council of Constantinople (381)
Πιστεύομεν εἰς ἕνα Θεὸν Πατέρα παντοκράτορα, πάντων ὁρατῶν τε και ἀοράτων ποιητήν.	Πιστεύομεν εἰς ἕνα Θεὸν Πατέρα παντοκράτορα, ποιητὴν οὐρανοῦ καὶ γῆς, ὁρατῶν τε πάντων και ἀοράτων.
Πιστεύομεν εἰς ἕνα κύριον Ἰησοῦν Χριστόν, τὸν υἱὸν τοῦ θεοῦ, γεννηθέντα ἐκ τοῦ πατρὸς μονογενῆ, τουτέστιν ἐκ τῆς ουσίας τοῦ πατρός, θεὸν εκ θεοῦ ἀληθινου, γεννηθέντα, οὐ ποιηθέντα, ὁμοούσιον τῳ πατρί	Και εἰς ἕνα κύριον Ἰησοῦν Χριστόν, τὸν υἱὸν τοῦ θεοῦ τὸν μονογενῆ, τὸν ἐκ τοῦ πατρὸς γεννηθέντα πρὸ πάντων τῶν αἰώνων, φῶς ἐκ φωτός, θεὸν ἀληθινὸν ἐκ θεοῦ ἀληθινοῦ, γεννηθέντα οὐ ποιηθέντα, ὁμοούσιον τῷ πατρί•
δι' οὗ τὰ πάντα ἐγένετο, τά τε ἐν τῳ ούρανῳ καὶ τὰ ἐπὶ τῆς γῆς	δι' οὗ τὰ πάντα ἐγένετο•
τὸν δι' ἡμᾶς τοὺς ἀνθρώπους καὶ διὰ τὴν ἡμετέραν σωτηρίαν κατελθόντα καὶ σαρκωθέντα και ενανθρωπήσαντα,	τὸν δι' ἡμᾶς τοὺς ἀνθρώπους καὶ διὰ τὴν ἡμετέραν σωτηρίαν κατελθόντα ἐκ τῶν οὐρανῶν καὶ σαρκωθέντα ἐκ πνεύματος ἁγίου καὶ Μαρίας τῆς παρθένου καὶ ἐνανθρωπήσαντα,
παθόντα, καὶ ἀναστάντα τῇ τριτῇ ἡμέρᾳ, καὶ ἀνελθόντα εἰς τοὺς οὐρανούς,	σταυρωθέντα τε ὑπὲρ ἡμῶν ἐπὶ Ποντίου Πιλάτου, καὶ παθόντα καὶ ταφέντα, καὶ ἀναστάντα τῇ τρίτῃ ἡμέρα κατὰ τὰς γραφάς, καὶ ἀνελθόντα εἰς τοὺς οὐρανοὺς, καὶ καθεζόμενον ἐκ δεξιῶν τοῦ πατρός
καὶ ἐρχόμενον κρῖναι ζῶντας καὶ νεκρούς.	καὶ πάλιν ἐρχόμενον μετὰ δόξης κρῖναι ζῶντας καὶ νεκρούς•
	οὗ τῆς βασιλείας οὐκ ἔσται τέλος.
Καὶ εἰς τὸ Ἅγιον Πνεῦμα.	Καὶ εἰς τὸ Πνεῦμα τὸ Ἅγιον, τὸ κύριον, (καὶ) τὸ ζωοποιόν, τὸ ἐκ τοῦ πατρὸς ἐκπορευόμενον, τὸ σὺν πατρὶ καὶ υἱῷ συμπροσκυνούμενον καὶ συνδοξαζόμενον, τὸ λαλῆσαν διὰ τῶν προφητῶν. εἰς μίαν, ἁγίαν, καθολικὴν καὶ ἀποστολικὴν ἐκκλησίαν• ὁμολογοῦμεν ἓν βάπτισμα εἰς ἄφεσιν ἁμαρτιῶν• προσδοκοῦμεν ἀνάστασιν νεκρῶν, καὶ ζωὴν τοῦ μέλλοντος αἰῶνος. Ἀμήν.
Τοὺς δὲ λέγοντας, ὁτι ἦν ποτε ὅτε οὐκ ἦν, καὶ πρὶν γεννηθῆναι οὐκ ἦν, καὶ ὅτι ἐξ ἑτέρας ὑποστάσεως ἢ οὐσίας φάσκοντας εἶναι, [ἢ κτιστόν,] τρεπτὸν ἢ ἀλλοιωτὸν τὸν υἱὸν τοῦ θεοῦ, [τούτους] ἀναθεματίζει ἡ καθολικὴ [καὶ ἀποστολικὴ] ἐκκλησία.