Charles H. Spurgeon on Psalms 18:49

Paul cites this verse (Romans 15:9): "And that the Gentiles might glorify God for his mercy; as it is written, For this cause I will confess to thee among the Gentiles, and sing unto thy name." This is clear evidence that David's Lord is here, but David is here too, and is to be viewed as an example of a holy soul making its boast in God even in the presence of ungodly men. Who are the despisers of God that we should stop our mouths for them? We will sing to our God whether they like it or no, and force upon them the knowledge of his goodness. Too much politeness to traitors may be treason to our King.