During the battle with Freeza, the titular antagonist mortally wounds Piccolo, blows Kuririn to smithereens, and threatens to do the same to Gohan. The sheer rage that this turn of events sparks in Goku causes him to undergo a sudden explosive transformation, and the first Super Saiyan in a millennium is born.
Grandpa Gohan - Goku's adoptive parent is responsible for teaching the young boy martial arts in the first place, harnessing his biological Saiyan strength.
Goku turned to a super Saiyan in the twenty-first episode of Frieza Saga season, the ninety-fifth episode overall.
Vegeta believes that Goku has become the legendary Saiyan warrior, the Super Saiyan. In the anime, however, Frieza fires at Goku and Piccolo pushes him aside, taking the attack for him. Son Goku is indeed the very first Super Saiyan to appear in the televised series in a humanoid appearance.
Jesus began to preach after being baptised by John the Baptist, and based on Luke's gospel John only began baptising people in "the fifteenth year of the reign of Tiberius Caesar" (Luke 3:1–2), which scholars estimate to have been in AD 28–29. Subtracting 30 years, it appears that Jesus was born in 1-2 BC.
Jesus was born in the fall of 2 BCE 1591 years after the birth of Moses, but 1471 years after Moses died. Jesus died on April 1st, 33 CE (AD), so it has been 1986 years since his death.