Revelation 9:6

6 And in those days shall men seek death, and shall not find it; and shall desire to die, and death shall flee from them.

This is going to be so bad that people will seek death but they will not find it. Why man cannot find death is unknown but God gives and takes life. Perhaps, because the pit of hell is opened, no one can die and go there until after the five months is up. It may be 5 months of the real Night of Living Dead for people on earth.

God, for His own reasons is not allowing any unsealed person to escape this torment. I think this is the ultimate tough love program. I believe God is allowing demons to give men of flesh a five month taste of the Lake of Fire. It is given in love so they will choose not to go there for eternity when they later are required to make a choice between taking the mark of the Beast and going to this place of torments for eternity or choosing God's Son and losing their physical lives so their soul will be saved from it. All mankind will still have another chance to come to Jesus and not choose to go to the place of eternal torments.