Brazen Serpent Type of Christ [Njoka ya Mkuwa Chithunzithunzi cha Yesu Opachikidwa]

Why did the people speak against the Word and Moses? How was the light that divided the darkness from night into day in Genesis, a picture of Christ? Why did Christ's 'own' know Him not? Why are all cursed that hang upon a tree [crucified]? How is the bronze serpent a picture of Christ crucified?