Paul writes later a letter to the Ephesians which we will read in a few weeks. As for now these three chapters make note of the specific events that took place earlier..
The first time was a short visit…
Acts 18:18 And Paul after this tarried there yet a good while, and then took his leave of the brethren, and sailed thence into Syria, and with him Priscilla and Aquila; having shorn his head in Cenchrea: for he had a vow.
Act 18:19 And he came to Ephesus, and left them there: but he himself entered into the synagogue, and reasoned with the Jews.
Act 18:20 When they desired him to tarry longer time with them, he consented not;
Act 18:21 But bade them farewell, saying, I must by all means keep this feast that cometh in Jerusalem: but I will return again unto you, if God will. And he sailed from Ephesus.
Apollos arrives in Ephesus
Act 18:24 And a certain Jew named Apollos, born at Alexandria, an eloquent man, and mighty in the scriptures, came to Ephesus.
And Paul returns.
Act 19:1 And it came to pass, that, while Apollos was at Corinth, Paul having passed through the upper coasts came to Ephesus: and finding certain disciples,
At this time the small church 12 men total was strengthened and Paul stay in Ephesus or used it as his base in Asia for several years.
Act 19:5 When they heard this, they were baptized in the name of the Lord Jesus.
Act 19:6 And when Paul had laid his hands upon them, the Holy Ghost came on them; and they spake with tongues, and prophesied.
Act 19:7 And all the men were about twelve.
Act 19:8 And he went into the synagogue, and spake boldly for the space of three months, disputing and persuading the things concerning the kingdom of God.
Act 19:9 But when divers were hardened, and believed not, but spake evil of that way before the multitude, he departed from them, and separated the disciples, disputing daily in the school of one Tyrannus.
Act 19:10 And this continued by the space of two years; so that all they which dwelt in Asia heard the word of the Lord Jesus, both Jews and Greeks.
Acts 19:10 Gill
And this continued by the space of two years,…. Reckoning from the end of the three months, which had been spent in teaching in the synagogue:
so that all they which dwelt in Asia; in the lesser Asia, called the proconsular Asia, of which Ephesus was the chief city:
heard the word of the Lord Jesus, both Jews and Greeks; these, as they came to Ephesus, whether on account of religion, the Asiatic Jews to their synagogue, and the Greeks or Gentiles to the famous temple of Diana, or on account of trade and business, or for the sake of seeing this place, had the opportunity of hearing the Apostle Paul preach, concerning the person, offices, and grace of Christ; and dispute and reason concerning the more abstruse and difficult points of the Christian religion, in the above school, for two years together; so that the word of the Lord went out from hence, and was spread in all the cities and towns in Asia.
His time there was not without serious conflict…
Act 19:17 And this was known to all the Jews and Greeks also dwelling at Ephesus; and fear fell on them all, and the name of the Lord Jesus was magnified.
Act 19:26 Moreover ye see and hear, that not alone at Ephesus, but almost throughout all Asia, this Paul hath persuaded and turned away much people, saying that they be no gods, which are made with hands:
Act 19:28 And when they heard these sayings, they were full of wrath, and cried out, saying, Great is Diana of the Ephesians.
Act 19:34 But when they knew that he was a Jew, all with one voice about the space of two hours cried out, Great is Diana of the Ephesians.
Act 19:35 And when the townclerk had appeased the people, he said, Ye men of Ephesus, what man is there that knoweth not how that the city of the Ephesians is a worshipper of the great goddess Diana, and of the image which fell down from Jupiter?
Paul makes one final stop back in Ephesus.
Act 20:16 For Paul had determined to sail by Ephesus, because he would not spend the time in Asia: for he hasted, if it were possible for him, to be at Jerusalem the day of Pentecost.
Act 20:17 And from Miletus he sent to Ephesus, and called the elders of the church.
We read more about this tomorrow.