What is the Cup of God's Wrath And Who Ultimately Drank It? #214

Right before His crucifixion, Jesus was praying with great drops of blood and seemingly shook to His very core by the 'cup' He was about to drink. We learn in Jeremiah that this cup is the cup of the wrath of God. What does this mean exactly, and how is it the best news in history that Jesus drank this cup, when it is actually you and I that were supposed to drink the cup?