In the twelfth Psalm they are feeling their weakness before the wicked, but they value God's Word which has promised them deliverance. He will put an end to all that now distresses and grieves, very soon.
We see here the parallel and the difference between the position of the Jewish remnant, and the Christians; both feel the growing wickedness in the world, the pressure against them, because it is Satan's world; on the other hand the Jews will expect the Lord to come to the earth, and display His power in setting up His kingdom, putting down all enemies.
But Christians look for Him to come before that time, unseen by the world, to take them away to glory.
The Psalm seems to refer to Jews who had professed to believe in the Lord and gone back,—the godly cease, the faithful fail.
In somewhat similar circumstances are believers today; may it lead us more to prayer and supplication!