LORD, how long will the wicked, How long will the wicked triumph? Psalm 94:3
It isn’t new! There have always been times when the redeemed have wondered why the ungodly seem to prosper while God’s people suffer.
The most important answer is that God never promised smooth sailing for believers. Quite the contrary, He promised that in this life we shall encounter tribulation and even persecution. Conversely, the suffering that accompanies faith in Christ doesn't touch those who do not believe. No wonder Jesus instructed us in the Sermon on the Mount that many are on the broad path that leads to destruction, while there are few on the narrow path that leads to life.
A second answer is that, believe it or not, hard times are part of God’s plan for the elect to strengthen our faith and facilitate our sanctification.
A third answer is revealed in Psalm 94, in answer to the beleaguered cry of saints surrounded by sinfulness in a wicked world:
Psalm 94:22-23 But the LORD has been my defense, And my God the rock of my refuge. 23 He has brought on them their own iniquity, And shall cut them off in their own wickedness; The LORD our God shall cut them off.
With these words we are comforted that God will deal with the wicked in the end.