a band of four soldiers. Peter was committed by Herod to the custody of four quaternions, i.e., one quaternion for each watch of the night ( Acts 12:4 ). Thus every precaution was taken against his escape from prison. Two of each quaternion were in turn stationed at the door ( 12:6 ), and to two the apostle was chained according to Roman custom.
M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition,
published by Thomas Nelson, 1897. Public Domain, copy freely.
[N] indicates this entry was also found in Nave's Topical Bible
[S] indicates this entry was also found in Smith's Bible Dictionary
Bibliography InformationEaston, Matthew George. "Entry for Quaternion". "Easton's Bible Dictionary".