Philetus, in Psalm 37 the theme is of the wicked passing away and the meek inheriting the earth, which is the time of the second consumation of sin on earth which was foretold by Enoch the seer, prophet, and scribe, before the flood, and Jude, a sibling of Jesus Christ, quoted from Enoch on that time which is yet to come.
Jesus referenced it, also, when He was asked what the sign of His coming was, for His reply was that "This generation shall not pass away until...and He delineated all the things that must come to pass on the earth before "This generation passes away ", as they did pass away from earth in the first consumation of sin on earth by the flood, "when they were all taken away".
The "one generation" of the children of wrath, "all the wicked", demons and rebel men who willfully rebel and all rebel angels who rule over this earth from the heavenly realm of it's dominion [which belonged to Adam, which Adam lost], will not pass away from the earth until the time appointed from the beginning of creation comes -which time is already appointed and will come in it's pre-appointed season.
You used the passage in Psalm 75 from a
faulty translation, and that is sloppy of you, as the concordance is easy to find and use; and the original is not "choose" as in "deciding later", for there is no "time" word in the original passage meaning to decide later in any sense, in context, but "laqach" of the "congregation", as in "taking away" =to Himself;
Psalm 75:2, in the Hebrew: laqach mow`ed shaphat meyshar
"Laqach" is translated these ways in the AV -from blb.org:
"mow`ed" is the congregation of YHWH, which is comprised of the OT testament saints who were taken to Zion above to wait for their regenerated bodies when Jesus ascended, and led them out of Sheol below to Zion above, and of NT saints -since His resurrection and ascension, who live on earth since the resurrection of the LORD in their own bodies until they depart the body to go to Zion above to wait for their resurrection bodies of regeneration also, for only those resurrected in Chrsit "Firstfruits" of the harvest of sons of God of the first harvest have been resurrected in their regenerated bodies, in Christ "The" Firstfruits, when He raised them at His resurrection, top fulfill the Living Oracle in the Law of "first of firstfruits", after Passover.
mow`ed: 1) appointed place, appointed time, meeting
a) appointed time
1) appointed time (general)
2) sacred season, set feast, appointed season
b) appointed meeting
c) appointed place
d) appointed sign or signal
e) tent of meeting
AV - congregation 150, feast 23, season 13, appointed 12, time 12,
assembly 4, solemnity 4, solemn 2, days 1, sign 1, synagogues 1; 223
"shaphat" is to vindicate, punish -and He will "laqach" the congregation from the midst of earth and then "vindicate His own by His wrath poured out and He will "plead with all flesh on earth"
"shaphat" ;1) to judge, govern, vindicate, punish
a) (Qal)
1) to act as law-giver or judge or governor (of God, man)
a) to rule, govern, judge
2) to decide controversy (of God, man)
3) to execute judgment
a) discriminating (of man)
b) vindicating
c) condemning and punishing
d) at theophanic advent for final judgment
b) (Niphal)
1) to enter into controversy, plead, have controversy together
2) to be judged
c) (Poel) judge, opponent-at-law (participle)
AV - judge (v) 119, judge 
60, plead 11, avenged 2, condemn 2,
execute 2, judgment 2, defend 1, deliver 1, misc 3; 203
meyshar is 1) evenness, uprightness, straightness, equity
a) evenness, level, smoothness
b) uprightness, equity
c) rightly (as adv)
AV - equity 4, uprightly 3, uprightness 3, right things 2, agreement 1,
aright 1, equal 1, right 1, righteously 1, sweetly 1, upright 1; 19
