I think the song is intended to be motivational or inspirational in some way. Lyrics like "You're no bigger than me" and "It Might Be Hard" present the idea that there might be something to overcome or move past. The song indicated that the listener or artist may need to stand up for themselves; "Say the words you have swallowed." The song suggests one should perhaps be more courageous, thus comparing the story of David and Goliath.