The pagan origins of Jesus Christ and Christianity is refuted in this website.
Here is one prime example.
thedevineevidence.com/jesus_similarities.html
According to Egyptian mythology, Horus was originally believed to be the son of Ra and Hathor and the
husband/brother of Isis. Later he was seen as the son of Osiris and Isis once Hathor and Isis were merged into
one being. Horus was considered the sky, sun, and moon god represented by a man with the head of falcon.
VIRGIN BIRTH There are two separate birth accounts in regards to Horus (neither depict a virgin birth):
Version 1: Hathor, the motherly personification of the milky way, is said to have conceived Horus but we are
told her husband, Ra, was an Egyptian sun god. Hathor (a sky goddess) was represented by the cow whose milk
brought forth the milky way. By the will of her husband Ra, she gave birth to Horus:
“I, Hathor of Thebes, mistress of the goddesses, to grant to him a coming forth into the presence [of the god]…
Hathor of Thebes, who was incarnate in the form of a cow and a woman.” Source and Source
Version 2: When we examine Isis as Horus’ mother, we are told Isis was not a virgin, but the widow of Osiris.
Isis practices magic to raise Osiris from the dead so she can bear a son that would avenge his death. Isis then
becomes pregnant from the sperm of her deceased husband. Again, no virgin birth occurs:
“[Isis] made to rise up the helpless members [penis] of him whose heart was at rest, she drew from him his
essence [sperm], and she made therefrom an heir [Horus].” Source and Source
THE FATHER AND SON UNITY Critics suggest the Christian trinity was adapted from the notion of Osiris, Ra,
and Horus being one god in essence. Because Horus was born after the death of Osiris, it came to be believed he
was the resurrection, or reincarnation, of Osiris:
“He avengeth thee in his name of 'Horus, the son who avenged his father.” Source
Throughout the centuries, the Egyptians eventually considered Osiris and Horus as one and the same. However,
this son-as-the-father comparison more closely resembles the metamorphosis of Hathor into Isis than it does the
Christian trinity. We see Horus first as the son of Ra, then being the equivalent of Ra, then Ra finally becoming
just as aspect of Horus. Similar to Hathor and Isis, we simply see a merger of one being into another. In
Egyptian mythology, each god had a distinct beginning by being conceived from other gods. In Christian
theology, God and Jesus always existed as one and the same, neither having a beginning or an end. Jesus’ birth
did not represent His creation- only His advent in human from. Furthermore, the father-son concept was not
created by first-century Christians. Prophecies in the Old Testament referred to the future Messiah as the Son of
God up to 1,000 years before the birth of Christ. I Chronicles 17:13-14