What does Psalm 28:8 mean?
As he closes out this psalm, David encourages the faithful people within Israel. He states that the Lord is their strength and the salvation of their king. This reference to "the saving refuge of his anointed" implies that those whom God chooses, He also protects. Nowhere is this more clearly seen than in God's promise to send a Messiah (Isaiah 9:6–7; 2 Samuel 7:16). Although nations tried to destroy Israel, the Lord always protected a remnant to ensure the arrival of the Messiah. Centuries after David, God even used the power of Rome to move Joseph and Mary to Bethlehem. There, the Messiah was born in fulfillment of the prophecy that Bethlehem Ephrathah would bring forth the Lord's appointed ruler of Israel (Micah 5:2; Luke 2:1–7).David also knew from experience that the Lord was his saving refuge. He had protected him from Goliath (1 Samuel 17:37, 50), Saul (1 Samuel 27:1–4), and the Philistines (2 Samuel 5:19). But the Lord's primary anointed one is the Messiah, Jesus. When Jesus was an infant, the Lord protected Him from Herod's hateful decree to kill all the male Jewish infants (Matthew 2:16–18). He also saved Him from the Devil's many attempts to destroy Him (Matthew 4:1–11). Further, He saved Him from death's grip by raising Him from the grave (Matthew 28:8–10). Someday, the Lord will inaugurate Jesus as King over all the earth (Revelation 19:11–16).
Psalm 28:8–9 comes after David has prayed to the Lord as his Rock. He requested help in the face of his enemies. He urged the Lord to punish the wicked in proportion to their evil. Next, he praised God for answering his prayer by giving him power and protection. Now he expands his perspective to include all the Lord's people. He views the Lord as the power and protection of His people, and he asks God to bless them and shepherd them forever.
David prays for God to hear him, noting the distinction between himself and those who wickedly reject God. Because he honors the Lord, David expects to be spared from the fate of evil people. Prior experience has made David confident in God's protection, a theme which he encourages all God's people to embrace.