Duty of the father

From the purport to SB 4.24.19

It is the duty of the father, the spiritual master and the king to regulate their subordinates in such a way that they ultimately become fully unalloyed devotees of the Supreme Lord. That is the duty of the superiors, and it is the duty of the subordinates to obey their orders perfectly and in a disciplined way. 

Sufficient Sunshine keeps the mind clear and transparent

From Srila Prabhupada's purport to SB 4.24.36 :
(Chapter Chanting of the Song Sung B Lord Siva)

When there is sufficient sunshine, the mind remains clear and transparent — in other words, the sun-god helps the mind of the living entity to become situated on the platform of paramahaṁsa. Thus Lord Śiva prays to Aniruddha to be kind upon him so that his mind will always be in the perfect state of cleanliness and will be engaged in the devotional service of the Lord. Just as fire sterilizes all unclean things, the sun-god also keeps everything sterilized, especially dirty things within the mind, thus enabling one to attain elevation to the platform of spiritual understanding.