There is a natural enmity to the devil himself put into all the woman's natural seed: but the moral enmity against his sinful temptations and works, is put only into the spiritual seed by the Holy Ghost (except what remnants are in the light of nature). I will be brief of all this and the next, having spoken of them more largely in my "Treatise against Infidelity," Part iii.
The devil's names do tell us what he is.[106] In the Old Testament he is called, 1. The "serpent," Gen. iii. 2. The Hebrew word, translated "devils," in Lev. xvii. 7, and Isa. xiii. 21, signifieth hairy, as satyrs are described; and sometimes he-goats; because in such shapes he oft appeareth. 3. He is called "Satan," Zech. iii. 1. 4. "An evil spirit," 1 Sam. xviii. 10. 5. "A lying spirit," 1 Kings xxii. 22; for he "is a liar, and the father of it," John viii. 44. 6. His offspring is called "a spirit of uncleanness," Zech. xiii. 2. 7. And he (or his spawn) is called "a spirit of fornication," Hos. iv. 12; that is, idolatry. 8. "A perverse spirit, causing staggering and giddiness as a drunken man," Isa. xix. 14.
In the New Testament, 1. He is sometimes called simply "a spirit," Mark ix. 20, 26; Luke ix. 39; x. 20. 2. Sometimes, πνευματα ακαθαρτα, "unclean spirits," Luke vi. 18; as contrary to the Holy Spirit; and that from their nature and effects. 3. And after, δαιμομιον, "demons," a word taken in a good sense in heathen writers, but not in Scripture; because they worshipped devils under that name, (unless perhaps Acts xvii. 18; 1 Tim. iv. 1.) And, δαιμων with respect to their knowledge, and, as some think, to the knowledge promised to Adam, in the temptation. 4. Πειραζων, "the tempter," Matt. iv. 5. "Satan," Matt. iv.; 1 Pet. v. 8. 6. Εχθρος, "an enemy," Matt. xiii. 28, 39. 7. "The strong man armed," Matt. xii. 8. "Angels," 1 Cor. vi. 3; 2 Pet. ii. 4. "Angels which kept not their first state," Jude 6. 9. "A spirit of divination," Acts xvi. 16. 10. "A roaring lion," 1 Pet. v. 8. 11. "A murderer," John viii. 44. 12. "Belial," 2 Cor. vi. 15. 13. "Beelzebub," Matt. xii. the "god of flies." 14. "The prince of this world," John xii. 21, from his power over wicked men. 15. "The god of this world," 2 Cor. iv. 5, because the world obey him. 16. "The prince of the power of the air," Eph. ii. 2. 17. "The ruler of the darkness of this world," Eph. vi. 12. "Principalities and powers." 18. "The father of the wicked," John viii. 44. 19. "The dragon, and the old serpent," Rev. xii. 20. Διαβολος, "the calumniator," or "false accuser," often. 21. Ὁ πονηρος "the evil one," Matt. xxiii. 19. 22. "An evil spirit," Acts xix. 15. 23. Απολλυων, "the destroyer," and "Abaddon," the "king of the locusts," and "angel of the bottomless pit," Rev. ix. 11, (unless that speak of antichrist).
3. He is too strong an enemy for lapsed sinful man to deal with of himself. If he conquered us in innocency, what may he do now? He is dangerous, (1.) By the greatness of his subtlety. (2.) By the greatness of his power. (3.) By the greatness of his malice. And hence, (4.) By his constant diligence, watching when we sleep, Matt. xiii. 25; and "seeking night and day to devour," 1 Pet. v. 8; Rev. xii. 4.
4. Therefore Christ hath engaged himself in our cause, and is become the "Captain of our salvation," Heb. ii. 10.[107] And the world is formed into two armies, that live in continual war: the devil is the prince and general of one, and his angels and wicked men are his armies: Christ is the King and General of the other, and his angels (Heb. ii. 14) and saints are his army. Between these two armies are the greatest conflict in the world.
5. It is supposed also, that this war is carried on, on both sides, within us, and without us; by inward solicitations, and outward means, which are fitted thereunto.
6. Both Christ and Satan work by officers, instruments, and means. Christ hath his ministers to preach his gospel, and pull down the kingdom of Satan. And Satan hath his ministers to preach licentiousness and lies, and to resist the gospel and kingdom of Christ, 1 Cor. iii. 5; iv. 1; 2 Cor. xi. 15; Acts xiii. 8-10. Christ hath his church, and the devil hath his synagogue. Christ's soldiers do every one, in their places, fight for him against the devil. And the devil's soldiers do every one, in their places, fight against Christ. The generals are both unseen to mortals; and the unseen power is theirs; but their agents are visible. The soldiers fight not only against the generals, but against one another; but it is all, or chiefly, for the generals' sakes. It is Christ that the wicked persecute in his servants, Acts ix. 4; and it is the devil whom the godly hate and resist in the wicked.
But yet here are divers notable differences. 1. The devil's servants do not what they do in love to him, but to their own flesh; but Christ's servants do what they do in love to him, as well as to themselves. 2. The devil's army are cheated into arms and war, not knowing what they do; but Christ doth all in the open light, and will have no servants but those that deliberately adhere to him, when they know the worst. 3. The devil's servants do not know that he is their general; but Christ's followers do all know their Lord. 4. The devil's followers disown their master and their work; they will not own that they fight against Christ and his kingdom, while they do it: but Christ's followers own their Captain, and his cause, and work; for he is not a master to be ashamed of.
7. Both Christ and Satan work persuasively, by moral means, and neither of them by constraint and force. Christ forceth not men against their wills to good, and Satan cannot force them to be bad; but all the endeavour is to make men willing; and he is the conqueror that getteth and keepeth our own consent.
8. Their ends are contrary, and therefore their ways are also contrary. The devil's end is, to draw man to sin and damnation, and to dishonour God; and Christ's end is, to draw man from sin to holiness and salvation, and to honour God. But Christ maketh known his end, and Satan concealeth his end from his followers.