Passage
He is the tower of salvation for his king: and sheweth mercy to his anointed, unto David, and to his seed for evermore.
He is the tower of salvation for his king: and sheweth mercy to his anointed, unto David, and to his seed for evermore.
2 Samuel 22:49 And that bringeth me forth from mine enemies: thou also hast lifted me up on high above them that rose up against me: thou hast delivered me from the violent man.
2 Samuel 22:50 Therefore I will give thanks unto thee, O LORD, among the heathen, and I will sing praises unto thy name.
2 Samuel 22:51 He is the tower of salvation for his king: and sheweth mercy to his anointed, unto David, and to his seed for evermore.
The verse centers on "mercy", "tower", "salvation", "king", "sheweth", "anointed", "david", and "seed". It is saying that the verse draws attention to "mercy" and "tower", so its meaning should be read from those terms before moving to application.
The prior verse says "Therefore I will give thanks unto thee...", giving immediate footing for "mercy" and "tower". In 2 Samuel context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "mercy" and "tower" with trust shaped by these words, not by a vague optimism outside the passage.