Day 29 covers all of Chapter 25, The Universal Gate of World-Voice-Perceiver Bodhisattva.

While much of World-Voice-Perceiver Bodhisattva’s helpful offerings seem a tad over the top, such as his willingness to free “anyone, guilty or not” bound up in manacles, this is one promise I’d like to believe:

Those who have much lust will be saved from lust if they constantly think of World-Voice-Perceiver Bodhisattva and respect him. Those who have much anger will be saved from anger if they constantly think of World-Voice-Perceiver Bodhisattva and respect him. Those who have much stupidity will be saved from stupidity if they constantly think of World-Voice-Perceiver Bodhisattva and respect him. Endless-Intent! World-Voice-Perceiver Bodhisattva has these great supernatural powers. He gives many benefits to all living beings. Therefore, they should constantly think of him.

Ryusho Jeffus Shonin has a different take on this chapter in his Lecture on the Lotus Sutra

The real value I think we as modern practitioners can find in Chapter 25, the Universal Gate of World-Voice-Perceiver Bodhisattva, is as a model for our own behavior. Through our practice we naturally develop empathy and an ability to listen to and respond to the suffering of others. We each have our unique talents to lend to others but through our practice we can develop greater skill in using those talents in the most effective way to benefit and bring joy to those around us who are suffering.
Lecture on the Lotus Sutra