Perun, the god of the ancient Slavs, is regarded as a fructifier, a purifier, and an overseer of right and order. He is perceived by the senses through various actions such as the sound of stones, the bleat of a he-goat, and the touch of an ax. In the language of the ancients, the word for Thursday was perundan, and in Slovak and Polish, it is translated to as "thunder."

In The Russian Primary Chronicle, Perun is mentioned as one of the gods of St. Vladimir, and his name is the first in a list of notable gods. Prone was a popular deity worshipped in oak groves by western Slavs and according to Helmold's Chronica Slavorum, he was called Prone by the western Slavs. In the 13th century, historian Grammaticus noted that Perun's son, Porenut, was also a popular deity.

During the Christian period, the worship of Perun was transferred to St. Elijah, but in folk beliefs, his various functions, such as purification and fructification, are still performed by his vehicles the ax, the bull, the he-goat, the dove, and the cuckoo.

Perun is regarded as the most significant god of Slavic and Balkan mythology. He is known to have various attributes, such as sky, thunder, lightning, rain, war, fertility, oak trees, and mountains.  He was associated with various types of weapons, such as horses and carts, hammers, and an axe, and arrows.

Read more at https://mythlok.com/perun/