the Israelites crossed it into the Promised Land
Jesus of Nazareth was baptized by John the Baptist in it.
“Crossing the River of Jordan” Symbolic of the journey to freedom. The actual crossing is the final step of the journey, which is then complete.
"Let me go 'way from the Mississippi Let me go 'way from the white man boss Show me that stream called the River Jordan That's the old stream that I long to cross". - Old Man River
Christening of royals
Because of the baptism of Jesus, water from the Jordan is employed for the christening of heirs and princes in several Christian royal houses, such as the cases of Prince George of Wales, Simeon of Bulgaria[35] and James Ogilvy.[36] Earlier, On 15 May 1717, the Empress Maria Theresa was baptised in Vienna by the Papal Nuntius Giorgio Spinola, representing Pope Clement XI, with baptismal water containing a few drops from the River Jordan.
"Michael Row the Boat Ashore", "Deep River", and "Roll, Jordan, Roll".
"The Wayfaring Stranger"
"The Far Side Banks of Jordan" by Johnny Cash and June Carter Cash