Psalm 18 is a Thanksgiving Psalm of intense emotion giving God the glory for all the victories God gave David and His Son (Christ) in fulfilling His covenant promises to them (v50). It continues the story * typology from Psalm 17. The title is: "A Psalm of David the servant of the LORD, who spoke to the LORD the words of this song on the day that the Lord delivered him from the hand of all of his enemies and from the hand of Saul." This is clearly an important Psalm, as it is in 2Samuel 22. It's a Messianic Psalm - although it was spoken by David and corresponds to his own circumstances & prayer, it was written in a Spirit of Prophecy, and can only be perfectly fulfilled by the Messiah. This is clear by the magnitude of the language, the claims of perfect righteousness, and the fact Paul quotes v49 in Romans 15:9 and applies it to Christ (see also v2 and Heb 2:13). Moreover, v50 gives a summary: "Great deliverance He gives to His KING, and shows mercy to His ANOINTED, to David and his descendants (SEED = Messiah) forevermore." So this indicates it is about God's manifestation of His covenant love to both His anointed ones - David and Messiah, His Seed. The promises & blessings of this Psalm also apply to believers who are in Christ, the Seed of David. As the title indicates, it was sung after David conquered all his enemies, both internal & external. It gives thanks and glory to God for all the deliverances and victories over the years. David, the warrior king, is a type of Christ, and so the stages of his life foreshadow that of Christ: (1) His anointing, mighty feats, suffering & persecution from the governing authority (Saul) before he became king foreshadow Christ's earthly ministry before He was enthroned as King. (2) David's enthronement as King at Hebron corresponds to Christ's enthronement at His resurrection. At this point, most of Israel did not follow Him (only Judah, a remnant), and although there was a 7-year war between him and the house of Saul, he did not try to force His rule on the rest. He was depending on God to establish His throne. David waited for 7 years before all Israel came to him and submitted to him as King. This corresponds to the 7 years on Israel's Clock yet to run as the Tribulation (Dan 9:24-27) during which Israel will come to Christ (2Sam 3:1) - the typology jumps over the Church Age, which was a mystery. At the end of the 7 years all Israel will be saved and welcome Christ to be her King (2Sam 5:1-5, Matt 24:37-39). (3) At this point, with Israel now submitted to him, David immediately operated in his kingly anointing to conquer all the surrounding enemy nations, starting with Jerusalem (2Sam 5:6-12), where he established His throne, followed by the rapid defeat and conquest of the Philistines (2Sam 5:17-24, 8:1), Moab, Zobar, Syria, Ammon & Amalek (2Sam 8:2-14). Likewise, when Israel receives Him, Christ will return at Armageddon as King of kings and conquer all the enemy armies from every nation gathered against Israel, and sit on His throne in Jerusalem. (4) Then David reigned over Israel and was also the head of the surrounding nations (2Sam 8:15). Likewise, Christ will reign over Israel and all the nations, as King over all the world in the Millennium. At this point David wrote Psalm 18 to give thanks for the manifestation of God's covenant love and power (v1,50). Likewise, it's also the Psalm Christ will sing when He has defeated all His enemies and established His Kingdom, giving thanks for what God has done. We see the stages of the parallel exaltation of David & Christ reflected in the Psalm. In v1-3, Christ (as typified by David) gives thanks for His strength and protection during His earthly life. Then in v4-24 He thanks God for delivering Him from death and conquering all His enemies in His mighty resurrection. Then in v25-36, He describes His regeneration and anointing by God at His resurrection & ascension (coronation) to reign as Lord administering God's grace and justic