King James Bible Dictionary

The name originally of a narrow strip of territory in Greece, on the north-west of the Peloponnesus. Subsequently it was applied by the Romans to the whole Peloponnesus, now called the Morea, and the south of Greece. It was then one of the two provinces (Macedonia being the other) into which they divided the country when it fell under their dominion. It is in this latter enlarged meaning that the name is always used in the New Testament Acts 18:12, 27; 19:21; Romans 15:26; 16:5, etc.). It was at the time when Luke wrote the Acts of the Apostles under the proconsular form of government; hence the appropriate title given to Gallio as the "deputy," i.e., proconsul, of Achaia (Acts 18:12).

grief; trouble

A region of Greece.

Paul visits
Acts 44:18; Acts 19:21; Romans 16:5; 1 Corinthians 16:15; 2 Corinthians 1:1

Benevolence of the Christians in
Romans 15:26; 2 Corinthians 9:2; 2 Corinthians 11:10

(trouble) signifies in the New Testament a Roman province which included the whole of the Peloponnesus and the greater part of Hellas proper, with the adjacent islands. This province, with that of Macedonia, comprehended the while of Greece; hence Achaia and Macedonia are frequently mentioned together in the New Testament to indicate all Greece. (Acts 18:12; 19:21; Romans 15:26; 16:5; 1 Corinthians 16:15; 2 Corinthians 7:5; 9:2; 11:10; 1 Thessalonians 1:7,8) In the time of the emperor Claudius it was governed by a proconsul, translated in the Authorized Version "deputy," of Achaia. (Acts 18:12)