Why do you jump from 8:3 to 14:4? What is the context dealing with? Your conclusion is not very valid.
We are in the church age at this present moment and then we will be in His millennial reign.
Yes, one could say that this is the "church" age, i.e., the age of God's chosen people, the ones "called out for His purpose"! This is also the last age before Christ returns and raises all the dead, rapturing (if I may use that term) the righteous raised along with the righteous living at that time - then the judgment of the raised unrighteous and the punishment to be served: the second death in the lake of fire. I realize that you won't accept that, but that's what the Bible tells us - and I don't believe Jesus, Peter and Paul were lying about it.
14:2 For I will gather all nations against Jerusalem to battle;(including the USA) and the city shall be taken, and the houses rifled, and the women ravished; and half of the city shall go forth into captivity, and the residue of the people shall not be cut off from the city. 00193 14:3 Then shall the LORD go forth, and fight against those nations, as when he fought in the day of battle. 00194 14:4 And his feet shall stand in that day upon the mount of Olives, which [is] before Jerusalem on the east, and the mount of Olives shall cleave in the midst thereof toward the east and toward the west, [and there shall be] a very great valley; and half of the mountain shall remove toward the north, and half of it toward the south. 00195 14:5 And ye shall flee [to] the valley of the mountains; for the valley of the mountains shall reach unto Azal: yea, ye shall flee, like as ye fled from before the earthquake in the days of Uzziah king of Judah: and the LORD my God shall come, [and] all the saints with thee. 00196 14:6 And it shall come to pass in that day, [that] the light shall not be clear, [nor] dark: 00197 14:7 But it shall be one day which shall be known to the LORD, not day, nor night: but it shall come to pass, [that] at evening time it shall be light. 00198 14:8 And it shall be in that day, [that] living waters shall go out from Jerusalem; half of them toward the former sea, and half of them toward the hinder sea: in summer and in winter shall it be. 00199 14:9 And the LORD shall be king over all the earth: in that day shall there be one LORD, and his name one.