Security - Vine's Expository Dictionary of New Testament Words
Security[ 1,,G2425, hikanos ]
sufficient," is used in its neuter form with the article, as a noun, in Acts 17:9, "(when they had taken) security," i.e., satisfaction, lit., "the sufficient." The use of hikanos in this construction is a Latinism in Greek. See Moulton, Proleg., p. 20. Probably the bond given to the authorities by Jason and his friends included an undertaking that Paul would not return to Thessalonica. Any efforts to have the bond cancelled were unsuccessful; hence the reference to the hindrance by Satan (1 Thessalonians 2:18). See ABLE, C, No. 2.