Jesus answering, said: You know not what you ask. Can you drink the chalice that I shall drink? They say to him: We can. He saith to them: My chalice indeed you shall drink; but to sit on my right or left hand, is not mine to give to you, but to them for whom it is prepared by my Father. – Mathew 20:22-23
“Two beloved disciples asked the Lord for thrones of glory – He gave them His Cup (Matthew 20:23).
The Cup of Christ is suffering.
To those who drink of it on earth, the Cup of Christ allows us to partake of Christ’s Kingdom of grace; it prepares thrones of everlasting glory in heaven for them.
We stand in silence before the Cup of Christ, nor can any complain about it or reject it; for He Who commanded us to taste of it first drank of it Himself.
O tree of the knowledge of good and evil! Thou hast slain our ancestors in Paradise; thou hast deceived them with the delusions of sensual pleasure and reason. Christ, the Redeemer of the fallen, brought His Cup of salvation into this world to the fallen and to those who are exiled from Paradise. The bitterness of this Cup cleanses the heart from forbidden, destructive and sinful pleasure; through the humility flowing from it in abundance, the pride of fleshly understanding is mortified. To him who drinks of the Cup with faith and patience, everlasting life, which was and still is, lost to him by his tasting of forbidden fruit, will be restored.” – Ignatius of the Caucasus ‘the Cup of Christ’
Note- Ignatius of the Caucasus is a Saint in the Russian Orthodox Church.