Love for God leads him who shares in it to be indifferent to every transient pleasure and every labour and distress. Let all the saints, who have suffered joyfully so much for Christ, convince you of this. (Maximos the Confessor)

Indifferent is not the right word.

Courageous, long-suffering, persistent... certainly. But to fail to notice, to not care, to be indifferent?

Jesus was not indifferent to the quality of wine at the wedding, nor the woman's fine oil, nor the thirst and pain of the cross.

There are stories of suffering joyfully. "I am now rejoicing in my sufferings for your sake," Paul writes to the Colossians.

But indifference is a Stoic, not a Christian virtue.