Grumbling is caused by misery and it can be put aside by doxology (giving praise). Grumbling begets grumbling and doxology begets doxology. when someone doesn’t grumble over a problem troubling him, but rather praises God, then the devil gets frustrated and goes off to someone else who grumbles, in order to cause everything to go even worse for him. You see, the more one grumbles, the more one falls into ruin.
Sometimes the devil deceives us and makes us unable to be pleased with anything; however, one can celebrate all things in a spiritual manner, with doxology, and secure God’s constant blessing.
“When you see your body wasted away through sickness, do not murmur against God, but say, The Lord gave and the Lord has taken away; blessed be the Name of the Lord (Job 1:21). 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.”