I think the point
@mark kennedy established is that the apostles were proclaiming the 'word of God' or 'word of the Lord' and as such like the OT prophets, they were establishing Scriptures.
Paul is very clear in Colossians that he was preaching 'the word of God.'
Colossians 1: NASB
24Now I rejoice in my sufferings for your sake, and in my flesh I do my share on behalf of His body, which is the church, in filling up what is lacking in Christ’s afflictions. 25Of this church I was made a minister according to the stewardship from God bestowed on me for your benefit, so that I might fully carry out the preaching of the word of God, 26that is, the mystery which has been hidden from the past ages and generations, but has now been manifested to His saints, 27to whom God willed to make known what is the riches of the glory of this mystery among the Gentiles, which is Christ in you, the hope of glory. 28We proclaim Him, admonishing every man and teaching every man with all wisdom, so that we may present every man complete in Christ. 29For this purpose also I labor, striving according to His power, which mightily works within me.
Seems to be a theme:
Act 4:31
And when they had prayed, the place where they had gathered together was shaken, and they were all filled with the Holy Spirit and
began to speak the word of God with boldness.
Act 6:2
So the twelve summoned the congregation of the disciples and said, “It is not desirable for us to neglect
the word of God in order to serve tables.
Act 6:7
The word of God kept on spreading; and the number of the disciples continued to increase greatly in Jerusalem, and a great many of the priests were becoming obedient to the faith.
Act 8:14
Now when the apostles in Jerusalem heard that Samaria had
received the word of God, they sent them Peter and John,
Act 11:1
Now the apostles and the brethren who were throughout Judea heard that the Gentiles also had received
the word of God.
Act 13:5
When they reached Salamis, they began to proclaim the word of God in the synagogues of the Jews; and they also had John as their helper.
Act 13:7
who was with the proconsul, Sergius Paulus, a man of intelligence. This man summoned Barnabas and Saul and sought to hear
the word of God.
Act 13:46
Paul and Barnabas spoke out boldly and said, “It was necessary that
the word of God be spoken to you first; since you repudiate it and judge yourselves unworthy of eternal life, behold, we are turning to the Gentiles.
Act 17:13
But when the Jews of Thessalonica found out
that the word of God had been proclaimed by Paul in Berea also, they came there as well, agitating and stirring up the crowds.
Act 18:11
And he settled there a year and six months,
teaching the word of God among them.
Rom 9:6
But it is not as though
the word of God has failed. For they are not all Israel who are descended from Israel;
1Co 14:36
Was it from you that
the word of God first went forth? Or has it come to you only?
2Co 2:17
For we are not like many, peddling
the word of God, but as from sincerity, but as from God, we speak in Christ in the sight of God.
2Co 4:2
but we have renounced the things hidden because of shame, not walking in craftiness or adulterating the
word of God, but by the manifestation of truth commending ourselves to every man's conscience in the sight of God.
Eph 6:17
And take THE HELMET OF SALVATION, and the sword of the Spirit,
which is the word of God.
Phl 1:14
and that most of the brethren, trusting in the Lord because of my imprisonment, have far more courage
to speak the word of God without fear.
Col 1:25
Of this church I was made a minister according to the stewardship from God bestowed on me for your benefit,
so that I might fully carry out the preaching of the word of God,
1Th 2:13
For this reason we also constantly thank God that when you
received the word of God which you heard from us, you accepted it not as the word of men, but for what it really is,
the word of God, which also performs its work in you who believe.
1Ti 4:5
for it is sanctified by means of the
word of God and prayer.
2Ti 2:9
for which I suffer hardship even to imprisonment as a criminal;
but the word of God is not imprisoned.
Tit 2:5
to be sensible, pure, workers at home, kind, being subject to their own husbands, so that
the word of God will not be dishonored.
Heb 4:12
For the word of God is living and active and sharper than any two-edged sword, and piercing as far as the division of soul and spirit, of both joints and marrow, and able to judge the thoughts and intentions of the heart.
Heb 6:5
and have
tasted the good word of God and the powers of the age to come,
Heb 11:3
By faith we understand that the worlds were prepared by
the word of God, so that what is seen was not made out of things which are visible.
Heb 13:7
Remember those who led you, who spoke the
word of God to you; and considering the result of their conduct, imitate their faith.
1Pe 1:23
for you have been born again not of seed which is perishable but imperishable, that is,
through the living and enduring word of God.
2Pe 3:5
For when they maintain this, it escapes their notice that
by the word of God the heavens existed long ago and the earth was formed out of water and by water,
1Jo 2:14
I have written to you, fathers, because you know Him who has been from the beginning. I have written to you, young men, because you are strong, and
the word of God abides in you, and you have overcome the evil one.
Rev 1:2
who testified
to the word of God and to the testimony of Jesus Christ, even to all that he saw.
Rev 1:9
I, John, your brother and fellow partaker in the tribulation and kingdom and perseverance which are in Jesus, was on the island called Patmos
because of the word of God and the testimony of Jesus.