Since I was 8 years old, (I am 15 now) my mom was extremely sick. She had a rare disease called scleroderma, she could barely walk, and most definitely could not cook or clean or do laundry or really anything besides lie down. For 6 years I took over cooking for the family, cleaning up after my siblings and parents, and taking care of my mom. I washed her and changed her clothes, brushed her hair and fed her. All while balancing a regular school life. I schooled myself at home because I could not go to public school. She left this world at the end of 2019. I wouldn't consider this a considerate thing to do, as there anyone in my position would have done the same, but that's the only thing I can think of at the moment :)
I would say that William Blake directs the poem's praise to the gentleness of nature. The book where all these poems are written is called Songs of Innocence, so it is obvious what he is talking about.