Through sickness…

When you see your body wasted through sickness, do not murmur against God, but say: “The Lord gave, and the Lord hath taken away; blessed be the name of the Lord.” You are accustomed to look upon your body as upon your own inalienable property, but that is quite wrong, because your body is God’s edifice.
— Saint John of Kronstadt (1829-1908)

With humble submission…

Bear with humble submission to the will of God every sorrow, every sickness and infirmity, every labor, every offense and disappointment, saying: “Thy Will be done,” knowing that God’s mercy orders everything for your good, and that the Lord can easily change every disappointment into happiness and joy.
— Saint John of Kronstadt (1829-1908)