What does the phrase 'blind and lame' signify in the story of David?

'Blind and lame' stands as a metaphor for both the self-righteous leaders who oppose God’s true salvation and the useless idols that the Jebusites relied on for security. David’s conquest serves as a reminder that faith in self or false gods will ultimately lead to ruin. As Christ indicated, true sight comes from acknowledging our spiritual blindness and turning to Him for healing and deliverance. The reference captures the futility of depending on anything but the true God, representing our need to trust in Christ, who alone gives us sight and strength to walk in faith.