Iod-Hei-Vav-Hei represents the Spiritual Sun, that is, the Logoic Triangle and the Ain Soph Aur.
Jeshua - Jesus, represents the letter Shin, the Logoic Triangle, the Spiritual Sun within the Solar Man.
Jeshua spoke to them, saying, “I [the letter Shin, "ש"] am [the Spirit of the Sun] the light of the world [of Assiah]. Whoever follows me will not walk in darkness, but will have the light of life.” - John 8:12
Jeshua answered and said unto them, Destroy this temple [Assiah], and in three days I [the spirit of the sun] will raise it up.
Then said the Jews, Forty and six years was this temple in building, and wilt thou rear it up in three days?
But he spoke of [Assiah] the temple of his [spiritual] body. When therefore he [the Spiritual Sun] was risen [in the North, the 25th of December after the 21th] from the [psychological] dead, his disciples [in Tiphereth] remembered that he had said this unto them; and they understood the scripture, and the word which Jesus had said. - John 2: 19-22
Solstice from Latin sol (sun) and sistere (to stand still).
December solstice usually occurs on the 21st of December, it is when the sun-Christ's elevation with respect to the North Pole is at its most negative value and its elevation with respect to the South Pole is at its greatest. The hemisphere has its longest night and shortest day around the moment of solstice with the night within the Arctic being 24 hours long.
יהשוה Jeshua [from Tiphereth] said to יהוה Iod-Havah [Ain Soph, Kether, Chokmah, Binah], before the eyes of Israel [ישראל – the god-men, the archetypes of Ra], Sun, stand still over Gibeon [the north]. - Jeshua 10:12.
Therefore a man [איש - Ish] will leave his father [Iod - י] and his mother [Hei – ה, in the north], and will join with his wife [אשה – Isha – in the south], and they will be one flesh [יהשוה Jeshua]. - Genesis 2: 24
The disciples gather around Jesus
It came to pass then, when [the Shin – ש in] Jesus our Lord [the sun] had been crucified [on the 21st of December within יהוה of Assiah] and had risen from the dead on the third day [on the 25th], that his disciples gathered round him, adored him and said:
“Our Lord, have mercy upon us, for we [אישים - Ishim] have abandoned father [Iod – י] and mother [Hei – ה] and the whole world [of Assiah] and have followed thee.” - Pistis Sophia Chapter 136
Therefore, every single Initiate that follows the path of the Christ-Sun is inevitably born spiritually the 25th of December