Now then bring it about; for the LORD has promised David, saying, ‘By the hand of my servant David I will save my people Israel from the hand of the Philistines, and from the hand of all their enemies.’” 2Sam. 3:18
The Philistines stand in typology as the enemies of David and the Israelites representing the antitype of the spirit enemies of Messiah and the Congregation.
For we are not contending against flesh and blood, but against the principalities, against the powers, against the world rulers of this present darkness, against the spiritual hosts of wickedness in the heavenly places. Eph. 6:12 (c.f. Rom. 8:38; Eph. 3:10; Col. 1:16; Col. 2:15)
And I heard a loud voice in heaven, saying, “Now the salvation and the power and the kingdom of our God and the authority of his Christ have come, for the accuser of our brethren has been thrown down, who accuses them day and night before our God. Rev. 12:10
Messiah’s authority to win this battle is a given.
Behold, I have given you authority to tread upon serpents and scorpions, and over all the power of the enemy; and nothing shall hurt you. Luke 10:19
. . . then the God of peace will soon crush Satan under your feet. The grace of our Lord Jesus Christ be with you. Rom. 16:20
. . . to the praise of his glorious grace which he freely bestowed on us in the Beloved. Eph. 1:6
7 In him we have redemption through his blood, the forgiveness of our trespasses, according to the riches of his grace 8 which he lavished upon us. Eph. 1:7
But thanks be to God, who gives us the victory through our Lord Jesus Christ. 1Cor. 15:57
Although Satan was defeated at the cross, he still afflicts God’s people, just as David defeated the Philistines, yet they continued from time to time to afflict God’s people. It was not until Hezekiah that the Philistines were finally defeated. (See Also: Philistia Who?)
He smote the Philistines as far as Gaza and its territory, from watchtower to fortified city. 2Kings 18:8
So Satan will not be defeated till he is thrown into the lake of fire.
. . . and the devil who had deceived them was thrown into the lake of fire and sulphur where the beast and the false prophet were, and they will be tormented day and night for ever and ever. Rev. 20:10