Well pretty much anything a river was used for but they did use it for baptisms. Jesus was baptized by John the Baptist in it.
departed it
The Jordan is the river which creates the border of Israel and Jordan country. The east bank of the river is a nickname for the Jordan country's side, and this nickname is used a lot when there is a talk about the Arab-Israeli argument.
Barley and Bread was used in Jesus's time
Most of the River Jordan is now an open sewer, for chemical and human waste; the water is a dirty yellow colour. It is also used by tourists and Christian pilgrims, who often immerse themselves in the water for baptism.
About six months after John begins preaching, Jesus at 30 years old, comes to him at the Jordan river to ask John to baptize him. This shows Jesus humility and deep respect for John who right away objects saying "I'm the one needing to be baptized by you". But Jesus insist to John to "Let it be, this time, for in that way it is suitable for us to carry out all that is righteous".
There are actually "two" Jordan rivers: the one from the slopes of Mt. Hermon to the Kineret (Sea of Galilee), and its continuation from the Kineret to the Dead Sea. The main importance of the Jordan River is in its first portion, which is the Kineret's major supply of fresh water. Because the country of Jordan is arid, it (like Israel) sees the river as one of its water-sources. Also, the river is Jordan's western border. For Syria, besides fresh water, the river has the significance that some of its northern stream-tributaries used to be within the borders of Syria and are now in the Israeli Golan Heights.
At the time of Jesus, there was the Roman currency as well as the other currency to be used in the temple.
Pineapples were unknown in Palestine during the time of Jesus.
The temple was used for selling and buying. And this act angered Jesus according to the bible.
They are following the example of John the Baptist who used the waters of the River Jordan to baptize people.
They used wood for it.
They used lead pipes , which the Romans used in Rome.