Acts of the Apostles

[...] Paul, having stayed after this many more days, took his leave of the brothers, and sailed from there for Syria, together with Priscilla and Aquila. He shaved his head in Cenchreae, for he had a vow. [...]

Acts of the Apostles: chapter 18, verse 18

Chapter 19, verse 40

⁴⁰ For indeed we are in danger of being accused concerning this day’s riot, there being no cause. Concerning it, we wouldn’t be able to give an account of this commotion.”