Charles Ellicott Commentary Acts 14:3

"Long time therefore they tarried [there] speaking boldly in the Lord, who bare witness unto the word of his grace, granting signs and wonders to be done by their hands." — Acts 14:3 (ASV)

Long time therefore abode they.—This can hardly be understood as involving a stay of less than several months, during which Paul and Barnabas, as before, were working for their livelihood.

Speaking boldly.—The “boldness” consisted, as the context shows, in a full declaration of the gospel of the grace of God as contrasted with the narrowing Judaism with which the Greek proselytes had previously been familiar.

Granted signs and wonders to be done by their hands.—It will be noted that here also, as so often elsewhere, the miracles that were performed came as the confirmation of faith, not as its foundation.