Sun (astrological symbol)
Fire as symbolized by Kossuth is a force of purification. Kossuth's ideal of purification draws upon a smithing analogy. Fire in a smith's forge strengthens and purifies metal. Thus, Kossuth's dogma is to seek challenges that forge the soul into a higher state of development, and a stonger, more powerful, purer form. The impulse here resembles something the ancient Greeks refered to as "Arete", which means excellence in action, to improve oneself, to seek perfection, to shine brightly, to be the best.
Kossuth's domains includes Renewal. The energy of the spring and the dawn celebrated by Lathander are indicated by the Sun. The Sun represents revitalization, refreshment, new growth, and energization.
In the correspondence between Torilian and real world astrology, the Sun may be viewed as a combination of real world astrology's Sun and Jupiter. In ancient astrology Jupiter was a planet associated with kings. So leadership and administration in general, organization, ambition, things grand or majestic, etc., are indicated by the Sun.