The bronze serpent

The Cross is the greatest demonstration of the love of God

And as Moses lifted up the serpent in the wilderness, even so must the Son of Man be lifted up, that whoever believes in Him should not perish but have eternal life. For God so loved the world that he gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life. For God did not send His Son into the world to condemn the world, but that the world through Him might be saved.

~ John 3:14,17.

Looking away from self to the provision of God

Then they journeyed from Mount Hor by the Way of the Red Sea, to go around the land of Edom; and the soul of the people became very discouraged on the way. And the people spoke against God and against Moses: "Why have you brought us up out of Egypt to die in the wilderness? For there is no food and no water, and our soul loathes this worthless bread."

So the Lord sent fiery serpents among the people, and they bit the people; and many of the people of Israel died. Therefore the people came to Moses and said, "We have sinned, for we have spoken against the Lord and against you; pray to the Lord that He take away the serpents from us." So Moses prayed for the people.

Then the Lord said to Moses, "Make a fiery serpent, and set it on a pole; and it shall be that everyone who is bitten, when he looks at it, shall live." So Moses made a bronze serpent, and put it on a pole; and so it was, if a serpent had bitten anyone, when he looked at the bronze serpent, he lived.

~ Numbers 21:4-9

Jesus, the true manna

"I am the bread of life. Your fathers are the manna in the wilderness, and are dead. This is the living bread which comes down from heaven. If anyone eats of this bread, he will live forever.; and the bread that I shall give is My flesh, which I shall give for the life of the world."

~ John 6:48-51