Isaiah 57:12,13

But Jehovah will no longer be silent; He will proceed to judgement (cf. again Psalms 50:21).

I will declare thy righteousness must be spoken ironically: "I will expose thy (pretended) righteousness." This might be said of the Samaritans, who claimed to be true worshippers of Jehovah just as ancient Israel had always done (Ezra 4:2).

and thy works, &c. Render with R.V. and as for thy works, they shall not profit thee.