Do not go gentle into that good night.
Old age should burn and rave at close of day;
Rage, rage against the dying of the light.
Though wise men at their end know dark is right,
Because their words had forked no lightning they
Do not go gentle into that good night.
The word “grave” echoes, through  assonant rhyme  the repeated “rage” at the beginning of line three of the first stanza and in line three of this stanza.  It unites anger, power, madness, and frustration in a whirlwind of emotion.
Do Not Go Gentle Into That Good Night