Regarding our righteousness being filthy rags.
Peoples only abilities in this life are misquoting.
Men did not hear( never believed) what God had prepared for them that wait for Him. This is of course quoted in 1 Corinthians 2, how belief never enters into the heart of man, what God has prepared for them that love Him. God reveals them unto us by HIs Spirit, these deep things of God ( belief in the knowledge of Jesus Christ.)
Now, God met those who rejoice and work righteousness ( in His salvation.) as said just a few verses earlier, this is our God ( Jesus Christ.) we have waited for Him ( to perceive what God has prepared for those who wait for Him.) He will save us ( from our sins and filth) this is the Lord ( Jesus Christ) and we then are rejoicing in His salvation. Now we are clothed with those garments of salvation, covered us with the robe of righteousness ( to meet God and to WORK RIGHTEOUSNESS.) which is remembering God in His ways.
Rejoice our King comes unto us, He is just, and has salvation, lowly, and riding upon a donkey, and upon a colt the foal of a donkey.
Isaiah 25:9 And it shall be said in that day, Lo, this is our God; we have waited for him, and he will save us: this is the Lord; we have waited for him, we will be glad and
rejoice in his
salvation.
Isaiah 61:10 I will greatly
rejoice in the Lord, my soul shall be joyful in my God; for he hath clothed me with the garments of
salvation, he hath covered me with the robe of righteousness, as a bridegroom decketh himself with ornaments, and as a bride adorneth herself with her jewels.
Isaiah 64:4 For since the beginning of the world men have not heard, nor perceived by the ear, neither hath the eye seen, O God, beside thee, what he hath prepared for him that waiteth for him.
5 Thou meetest him that rejoiceth and worketh righteousness, those that remember thee in thy ways: behold, thou art wroth; for we have sinned: in those is continuance, and we shall be saved.
6 But we are all as an unclean thing, and all our righteousnesses are as filthy rags; and we all do fade as a leaf; and our iniquities, like the wind, have taken us away.
Zechariah 9:9 Rejoice greatly, O daughter of Zion; shout, O daughter of Jerusalem: behold, thy King cometh unto thee: he is just, and having
salvation; lowly, and riding upon an ass, and upon a colt the foal of an ass.
1 Corinthians 2:9 But as it is written, Eye hath not seen, nor ear heard, neither have entered into the heart of man, the things which God hath prepared for them that love him.
10 But God hath revealed them unto us by his Spirit: for the Spirit searcheth all things, yea, the deep things of God.