What is the meaning of the cup in the Bible?
“He went away a second time and prayed, “My Father, if it is not possible for this cup to be taken away unless I drink it, may your will be done.” (Matthew 26:42)
Jesus is facing death for the first time in very real terms, which requires one to pray and concentrate. The Cup is what the feminine aspect of God is called. The Father is the masculine and the pure one – the way to the eternal life. The Cup represents the Mother and Nature, the selfish side of the All – the aspect of humanity with animal/beast features. Jesus is praying: “If this animal side of me and all people is not possible to be taken away unless I die, I am ready to die.” It is very important to understand that Jesus represents both - the individuals like himself and the people as a species (= humanity). It is also important to understand "I" that will die is our ego and old identity.
The Cup is normally described in the symbolic language as a triangle with a single angle pointing downwards. This feminine triangle is also called the Chalice. In the language of symbolism one can see the connection between this cup and the one that was just used in Bible a couple of chapters earlier at the Last Supper. Jesus offers his blood to his disciples with a chalice which symbolizes the sacrifice of Jesus’ blood for the people.
In the Kabbalah all people are seen as cups. We are the cups that always want something in us, and we are never full, and only our God is the cup that is the eternal giver. In this context, Jesus is finally ready to release the animal-kind cup inside him. Please understand that these symbols need to be realized first as mental thoughts and ideas. After that it is much easier to find their correct correspondence in the physical world too. The whole Bible is first of all the mental guideline.