Andrei Shishkin - PerunWhile the exact pantheon characterization differed between the Slavic tribes,

Andrei Shishkin - Perun

While the exact pantheon characterization differed between the Slavic tribes, Perun is generally believed to have been considered as the supreme god by the majority, or perhaps nearly all Slavs, at least towards the end of Slavic paganism. The earliest supreme god was probably Rod; it is unclear precisely how and why his worship as the head of pantheon evolved into the worship of Perun. Another candidate for supreme deity among at least some Slavs is Svarog.

As a thunder deity, all manner of rain-related phenomenon were associated with him. Perun’s family all had roles in the coming of rain. His sons would make the thunder and cause the lightning to strike. His daughters and wife would sift the rain. Together, they brought the moisture, thus making the land fertile so crops would grow. This would have been very important to the agricultural societies which worshipped Perun. To invoke Perun’s favor or call upon him to bring the rains, worshippers would give food offerings to the god. It is considered unlikely that human sacrifices were made to Perun.