Acts 19:19-21 Amplified Bible (AMP)
19 And many of those who had practiced magical arts collected their books and [throwing book after book on the pile] began burning them in front of everyone. They calculated their value and found it to be [a]50,000 pieces of silver. 20 So the word of the Lord [concerning eternal salvation through faith in Christ] was growing greatly and prevailing.
21 Now after these events, Paul determined in the Spirit that he would travel through [b]Macedonia and Achaia (most of the Greek mainland), and go to Jerusalem, saying, “After I have been there, I must also see Rome [and preach the good news of salvation].”