It is quite clear but you are arguing the wrong side of the verse.
“But now apart from the Law the righteousness of God has been revealed, being witnessed by the Law and the Prophets, but it is the righteousness of God through faith in Jesus Christ for all those who believe;
The verse is very clear that APART from the law the righteousness of God has been revealed. Did you get that part “apart from the law”?
So how do you reconcile your interpretation of that verse with this one?:
(CLV) Mt 5:20
For I am saying to you that, if ever your righteousness should not be superabounding more than that of the scribes and Pharisees, by no means may you be entering into the kingdom of the heavens.
Your secular definition of righteousness falls in light of the redemptive sacrifice of our Lord.
I didn't realize that divine law was secular.
(CLV) Dt 4:8
And what great nation is there which has statutes and ordinances so righteous as all this law that I am putting before you today?
(CLV) Pr 21:15
A rejoicing to the righteous one is the execution of right judgment, Yet an undoing to those who contrive| lawlessness.
(CLV) Pr 29:6
In the transgression of an evil man is a trap, Yet the righteous one may run and rejoice.
(CLV) Pr 29:16
When the wicked increase- transgression |increases, Yet the righteous shall see their downfall.
(CLV) Isa 29:20
For the terrifier will reach his limit, And the mocker will be finished, And all who are alert for lawlessness will be cut off,
(CLV) Isa 29:21
Those who make a person a sinner with a word, And for the arbitrator in the gateway they lay a trap And are turning aside the righteous into a chaos.
(CLV) Ezk 3:20
Again, when a righteous one turns back from his righteousness and does iniquity when I put a stumbling block before him, he shall die. If you do not warn him, he shall die in his sin, and his righteous acts which he had done shall not be remembered, but his blood I shall seek to exact from your hand.
(CLV) Ezk 3:21
Yet you, if you do warn him, this righteous one, by no means to sin, and he, the righteous one, does not sin, he shall live, yea live for taking warning, and you will have rescued your soul.
(CLV) Ezk 18:9
He walks in My statutes and observes My ordinances, to do truth; he is righteous; he shall live, yea live, averring is my Lord Yahweh.
(CLV) Ezk 18:20
The soul that is sinning, it shall die; the son shall not bear the depravity of the father, and the father shall not bear the depravity of the son; the righteousness of the righteous one shall be reckoned onto him, and the wickedness of the wicked one shall be reckoned onto him.
(CLV) Ezk 18:24
Yet when the righteous one turns back from his righteousness and commits iniquity like all the abhorrences which the wicked one commits, shall he do so and live? All his righteous acts which he did shall not be remembered; in his offense with which he offended and in his sin with which he sinned, in them shall he die.
(CLV) Ezk 18:26
When the righteous one turns back from his righteousness and commits iniquity, he will die for it; in his iniquity which he commits he shall die.
(CLV) Ezk 33:12
Yet you, son of humanity, say to the sons of your people: The righteousness of the righteous one shall not rescue him in the day of his transgression; as for the wickedness of the wicked one, he shall not be caused to stumble by it in the day he turns back from his wickedness, and the righteous one cannot live by it in the day he sins.
(CLV) Ho 14:9
Who is wise shall also understand these things. These being understood, he shall also acknowledge them. For upright are the ways of Yahweh, And the righteous, they shall walk in them. Yet the transgressors, they shall be stumbled in them.
(CLV) Am 2:6
Thus says Yahweh: Due to three transgressions of Israel, And due to four, I shall not turn it back, Because they sold the righteous for silver, And the needy for the sake of a pair of sandals;