See on Mt 20:23-28 for discussion on these memorable verses (39-45) identical in both Matthew and Mark. In particular in verse 45 note the language…

But it shall be given to them.—Better, omitting the interpolated words, is not mine to give, but to those for whom it…

And Jesus said unto them, Ye shall indeed drink of the cup that I drink of; and with the baptism that I am baptized withal shall ye be baptized…

St. John Chrysostom: The disciples, hearing Christ speak often of His kingdom, thought that this kingdom was to come before Hi…

With a confident “We can,” the disciples answered Jesus’ question about going through the suffering of his passion. How naive! James and John faile…

But to sit on my right hand and on my left, is mine to
give
There being no such place…

Christ's perseverance in His undertaking for the salvation of humankind was, is, and will be, the wonder of all His disciples. Worldly honor is a g…