Perhaps secular is too strong a word but I always see the term tied to judgement
First mention I've found is Genesis 11:5 in reference to the tower of Babel. The sons of men being a reference to nimrod and all who went with him.
1 kings 8:39 is talking about God forgiving after trying the hearts of the sons of men- the contexts being that they have not walked in His ways prior.
2 chron 6:30 again about knowing the hearts that men might fear God
Psalms has a lot of mentions
4:2
O sons of men, how long will my honor become a reproach? How long will you love what is worthless and aim at deception? Selah.
11:4
The Lord is in His holy temple; the Lord’s throne is in heaven; His eyes behold, His eyelids test the sons of men.
12:1
Help, Lord, for the godly man ceases to be, For the faithful disappear from among the sons of men.
12:8
The wicked strut about on every side When vileness is exalted among the sons of men
14:2
The Lord has looked down from heaven upon the sons of men To see if there are any who understand, Who seek after God.
21:10 links to destruction :
Their offspring You will destroy from the earth, And their descendants from among the sons of men.
31:19 contrasts those who trust in God vs sons of men :
How great is Your goodness, Which You have stored up for those who fear You, Which You have wrought for those who take refuge in You, Before the sons of men!
even as you cited 33.. the contexts is those who trust in their own strength:
The Lord looks from heaven;
He sees all the sons of men;
14 From His dwelling place He looks out
On all the inhabitants of the earth,
15 He who fashions the hearts of them all,
He who understands all their works.
16 The king is not saved by a mighty army;
A warrior is not delivered by great strength.
17 A horse is a false hope for victory;
Nor does it deliver anyone by its great strength.
psalm 45:3-5 contrasts Gods grace vs the sons of men and immediately goes into destruction of opposition
53:The fool has said in his heart, “There is no God,”
They are corrupt, and have committed abominable injustice;
There is no one who does good.
2 God has looked down from heaven upon the sons of men
To see if there is anyone who understands,
Who seeks after God.
3 Every one of them has turned aside; together they have become corrupt;
There is no one who does good, not even one.
57:4
My soul is among lions; I must lie among those who breathe forth fire, Even the sons of men, whose teeth are spears and arrows And their tongue a sharp sword.
58:1-3 is about unrighteous judges and their condemnation
66:5 directs back to verse 3 about how God's enemies have faked obedience because of God's might.
89:47 negative connotation
107 is packed with how men have went astray but God is gracious.
115:16 directs into 17 about the dead.
145: All Your works shall give thanks to You, O Lord,
And Your godly ones shall bless You.
11 They shall speak of the glory of Your kingdom
And talk of Your power;
12 To make known to the sons of men Your mighty acts
And the glory of the majesty of Your kingdom.
proverbs 8:
Beside the gates, at the opening to the city,
At the entrance of the doors, she cries out:
4 “To you, O men, I call,
And my voice is to the sons of men.
5 “O naive ones, understand prudence;
And, O fools, understand wisdom.
ecc1:3 affliction
1:12 affliction
2:3 foolishness
3:10 enmity
3:18 testing beasts
9:3
This is an evil in all that is done under the sun, that there is one fate for all men. Furthermore, the hearts of the sons of men are full of evil and insanity is in their hearts throughout their lives. Afterwards they go to the dead.
Jer 32: 19 judgement
lamentations 3
For if He causes grief,
Then He will have compassion
According to His abundant lovingkindness.
33 For He does not afflict willingly
Or grieve the sons of men.
34 To crush under His feet
All the prisoners of the land,
Ezekiel 31: 14 - ties to judgement in the pit
daniel 2:38 ruling over like beasts
Joel 1:11-13 lamenting
Micah 5:7 in a destruction passage
Mark 3:28
“Truly I say to you, all sins shall be forgiven the sons of men, and whatever blasphemies they utter
Ephesians 3:
By referring to this, when you read you can understand my insight into the mystery of Christ, 5 which in other generations was not made known to the sons of men, as it has now been revealed to His holy apostles and prophets in the Spirit; 6 to be specific, that the Gentiles are fellow heirs and fellow members of the body, and fellow partakers of the promise in Christ Jesus through the gospel
