What is the armour of God described in Ephesians 6?

By armour is meant Christ.  We read of putting on the ‘Lord Jesus,’ Rom. 13:14, where Christ is set forth under the notion of armour.  The apostle doth not exhort them for rioting and drunkenness to put on sobriety and temperance, for chambering and wantonness [to] put on chastity, as the philosopher would have done, but bids, ‘put ye on the Lord Jesus Christ;’ implying thus much [that] till Christ be put on, the creature is unarmed.  It is not a man's morality and philosophical virtues that will repel a temptation, sent with a full charge from Satan's cannon, though possibly it may the pistol-shot of some less solicitation; so that he is the man in armour, that is in Christ.