Read John 6:48-58
Jesus is trying to get people to understand who He is and where He came from.
Numerous times before Jesus has described himself as being from Heaven and also as the bread of life.
In their history these people knew well of the Israelites who escaped Egypt and who were led through the wilderness to the Promised land by Moses.
It was at that time that God provided for them the manna from Heaven.
Those who ate the manna have since passed away.
Like the manna that came down from Heaven, Jesus has come from Above and He has referred to Himself as the bread of life.
Once again Jesus promises eternal life if only we believe in Him and listen to Him and do what He says.
God bless us as we remember His Son, Jesus.