Then came to him the mother of Zebedee's children with her sons, worshiping him, and desiring a certain thing of him. And he said unto her, "What wilt thou?" She said unto him, "Grant that these my two sons may sit, the one on thy right hand and the other on the left, in thy kingdom."
The request of Salome, mother of James and John, was one Christ could not answer and it produced indignation among the other ten disciples.
Salome probably felt she had some basis for her petition. One of her sons, John was known as the disciple whom Jesus loved. Her other son James was one of three who witnessed the Transfiguration of Christ.
Yet Jesus answered Salome, "Ye know not what you ask." James endured the baptism of blood (see Acts 12:2) and John endured persecution and loneliness on Patmos (Revelation 1:9). Let us be careful how we pray. Some answers to our prayer petitions may be costly.