2 Thessalonians 2:7

For the mystery of lawlessness doth already work: only there is one that restraineth now, until he be taken out of the way. [In verse 6 we have a thing ("that which") restraining the person of antichrist, and in this verse we have the thing ("mystery of lawlessness") which would produce the antichrist restrained by a person. This nicety of expression is important, and should be noted. The traces of that spirit which overrules God's laws and substitutes its own were abundant in the church. It showed itself in attempts to engraft both Judaism and paganism into Christianity, thus paving the way for an apostasy, with a great head apostate. Romans and Galatians were written to correct Judaizing tendencies, and the Epistle to the Hebrews was an attempt to wean weak Christians from the sensuous ritualism of Moses. Tendencies to lapse into paganism are also frequently reproved. See especially Colossians 2:16-23; 1 Corinthians 5:1-8]