ISB ~ Acts 18 v18

Cenchre-ae:An eastern seaport on the isthmus near Corinth. A Church was eventually founded there as well (Rom 16:1).

he had a vow:A temporary commitment to abstain from cutting the hair (Num 6:5). The vow was probably a gesture of thanksgiving for God’s deliverance (18:10), and its completion involved shaving the head. For another example of Paul performing Jewish ceremonial rites, see 21:23-26 (CCC 2102).