There are many prophecies and accomplishments between Moses and Jesus. One of them is feast of God. Through act of Moses, old feasts of God were established. This feasts of God became prophecies about Jesus. When studying this one by one, we would be surprised of its fulfillment.

What Moses did is a prophecy that Jesus will fulfill.
The fact that the history of the people of Israel holding the bronze serpent in the wilderness is the history of Jesus' death on the cross.
Thank you for learning today.
We came to know that our salvation is not the visible cross, but the blood that Jesus shed on the cross.

Moses and Jesus are related to as a prophecy and fulfillment. Through the work of Moses, we can understand the work of salvation of Jesus. the history of setting up the bronze serpent in the desert is for setting up the Cross

The cross is the just idol that can be no substitute for God absolutely. But most churches use the cross as the symbol of it. Is it able to represent the church in which God dwells? Never! God said, 'No other gods or idols in front of God'. Through the Bible, we need to study and realize the true meaning of the cross and follow and obey only God Almighty. Let's serve and be in awe of God. If those who fear God cannot erect or worship in front of the cross.