Psalms, chapter eighteen, verses one through fifty, is a similar psalm to Second Samuel twenty-two with a few changes written possibly early in David’s reign, as in Second Samuel eight, verse fourteen, before he committed his terrible sin and suffered greatly under a lifelong chastisement from God, as in Second Samuel twelve, verses fourteen. The psalm may speak prophetically of Christ, as in verse forty-nine, when prophesying was a time through the Messiah, all nations will praise the name of God, as in Romans fifteen, verse nine.
The theme verse is under the “Calling upon God in distress” section, which is quite similar to chapter twenty-two of Second Samuel, with the difference beginning with the theme verse not found. “A Psalm of David, the servant of the LORD, who spake unto the LORD the words of this song in the day that the LORD delivered him from the hand of all his enemies, and from the hand of Saul: And he said, I will love thee, O LORD, my strength.” The opening verse of this theme depicts how much David expresses his love for God, experiencing deliverance during the time within his life against the Philistines and overcoming that battle. Then, he was victorious over Saul, who sought to kill him. When David witnessed and saw the mighty hand of God bring Him through all these situations, his heart was full of love for Him, seeing how much He loves and cares for His safety from those enemies.
Today, believers should have the same love and dependence on God for Him to work mightily on their behalf. Love conquers all things that attempt to get in the way. David inquired to the Lord during his time against his enemies and carefully conducted himself around Saul until God removed him from his presence. David did not attempt to harm Saul but only spared him. He waited and trusted God to take care of the situation against Saul in His time.
Loving God includes obedience and trusting Him to work on our behalf. A believer will keep the Word of God in their heart and do them.