When the Son of man cometh, will He find faith on the earth?

-Luke 18:8b

For men shall be lovers of their own selves, covetous, boasters, proud, blasphemers, disobedient to parents, unthankful, unholy,
Without natural affection, trucebreakers, false accusers, incontinent, fierce, despisers of those that are good.

-II Timothy 3:2-3

For then shall be great tribulation, such as was not since the beginning of the world to this time, no, nor ever shall be.
And except those days should be shortened, there should no flesh be saved: but for the elect's sake th.ose days shall be shortened.

-Matthew 24:21-22

Let no man deceive you by any means: for that day shall not come, except there come a falling away first, and that man of sin be revealed, the son of perdition;
Who opposeth and exalteth himself above all that is called God, or that is worshipped; so that he as God sitteth in the temple of God, shewing himself that he is God.

And then shall that Wicked be revealed, whom the Lord shall consume with the spirit of His mouth, and shall destroy with the brightness of His coming:
Even him, whose coming is after the working of Satan with all power and signs and lying wonders,

-II Thessalonians 2:3-4;8-9

For as in the days that were before the flood they were eating and drinking, marrying and giving in marriage, until the day that Noe entered into the ark,
And knew not until the flood came, and took them all away; so shall also the coming of the Son of man be.

-Matthew 24:38-39

For nation shall rise against nation, and kingdom against kingdom: and there shall be famines, and pestilences, and earthquakes in divers places.
All these are the beginning of sorrows.
Then shall they deliver you up to be afflicted, and shall kill you: and ye shall be hated of all nations for My Name's sake.
And then shall many be offended, and shall betray one another, and shall hate one another.

-Matthew 24:7-10

4. Postmillennial teaching portrays the present age as smoothly and almost unnoticeably sliding into the coming age, while Scripture testifies of it as a great catastrophe, a tremendous intervention of God, a passing away of the old heavens and earth and the establishment of the new.

Immediately after the tribulation of those days shall the sun be darkened, and the moon shall not give her light, and the stars shall falI from heaven, and the powers of the heavens shall be shaken:
And then shall appear the sign of the Son of man in heaven: and then shall all the tribes of the earth mourn, and they shall see

Son of man coming in the clouds of heaven with power and great glory.
And He shall send His angels with a great sound of a trumpet, and they shall gather together His elect from the four winds, from one end of heaven to the other.

-Matthew 24:29-31

Postmillennialism presents an overly optimistic picture of the old world and underemphasizes the need for the new world. Why are both parts of this statement true?