'Does Job fear God for no reason?'Job 1:9
This was the wicked question of Satan concerning that upright man of old, but there are many in the present day concerning whom it might be asked with justice, for they love God after a fashion because He prospers them; but if things went ill with them, they would give up all their boasted faith in God. If they can clearly see that since the time of their supposed conversion the world has gone prosperously with them, then they will love God in their poor, carnal way; but if they endure adversity, they rebel against the Lord.
Their love is the love of the table, not of the host; a love of the cupboard, not of the master of the house. As for the true Christian, he expects to have his reward in the next life and to endure hardness in this. The promise of the old covenant was prosperity, but the promise of the new covenant is adversity. Remember Christ's words—"Every branch of mine that does not bear fruit"—what?—"he takes away, and every branch that does bear fruit he prunes, that it may bear more fruit."1 If you bring forth fruit, you will have to endure affliction.
"Alas," you say, "that is a terrible prospect." But this affliction works out such precious results, for the Christian who is the subject of it must learn to rejoice in tribulations because as his tribulations abound, so his consolations abound by Christ Jesus.
Rest assured, if you are a child of God, you will be no stranger to the rod. Sooner or later every bar of gold must pass through the fire. Fear not, but rather rejoice that such fruitful times are in store for you, for in them you will be weaned from earth and made meet for heaven; you will be delivered from clinging to the present and made to long for those eternal things that are so soon to be revealed to you. When you feel that as regards the present you do serve God for nothing, you will then rejoice in the infinite reward of the future.
1) John 15:2