"And that's a good line to take it to the bridge"
It reminded me of something someone said to me over nine years ago, which was "step away from the bridge" (I was interacting with a troll on the Internet). Back then, I thought the person was advising me to remove myself from a metaphorical helm, like on a ship; however, when listening to "Strong", I realised that the person was making a clever reference to Three Billy Goats Gruff - the fairy tale in which a troll living under a bridge is defeated by goats.
Either way, I was being asked to remove myself from the situation but the metaphor was more clever than I had initially realised. A shame it took me over nine years to work out - and with the help of a song I'd heard several times!