[This question is actually vague and vast.]
Robert Southey’s poem ‘The Inchcape Rock’ is a didactic poem where he narrates the legendary story surrounding the Inchcape Rock. The Abbott wanted to do some good to the mankind by tying a bell to the rock to alert the passing ships of the danger of the rock. But the Rover Ralph got jealous at the popularity of the Abbott. So he cut the bell from the rock and looted the ships that suffered due to bad weather and hit the rock. In the end, the rover himself got punished when his own ship lost the way and hit the same rock, causing his death. This is called poetic justice in literary term. The poet has delivered a great message through the poem: ‘As you sow, so shall you reap’.