Ever looked in the mirror and noticed left is right?
The Bible, being an allegory (Gal 4:24), speaks about such things, notably the man in mirror being what "was", not what is.
1Corinthians 13, 2Corinthians 3, and James 1 all speak of the glass (mirror) in which we behold the natural of natural/spiritual (before/after), the allegory being law/grace; one being the reverse of the other one of twain things compared.
In Timothy, Paul speaks of such as what "was" of was/is, and in connection with Christ Jesus of Christ Jesus/Jesus Christ (also the reverse)... the point being we are all changed from this to that of this/that, from (law) glory to (grace) glory, blind faith to seeing faith (the faith, of the Son, of God).
For God said: "let us make man", one man kind; And of twain options given as before/after scenarios, it is the "after" part (our likeness) that we are now of then/now:
1) in our image
2) after our likeness
Such twain one man scenarios are allegorically compared in Romans 5 as one man vs one man, and in 1Cor 15 as first vs last Adams, and many other places in the NT as Moses vs Jesus Christ... the allegory being law vs grace, law being what was, grace being what is, of such was/is... the was thereof being the beast which was and is not (Revelation), for law (having had an expiry date) got abolished (Eph 2), done away (1Cor 13; 2Cor 3), blotted out (Col 2), taken out of the way, nailed to the cross for being the enmity, the curse, the thief, the darkness, the shadow, the false part of false/true spirits(plural) we are to try, and see which is witch of twain.
The point? Law is the put off to put away, the childish part of child/man (law/grace), the faulty part of faulty/perfect (Hebrews), what was of was/is, and only was for shew, twain being for comparison, a comparative teaching (for our learning: Rom 15:4) to know what His grace is, in comparison to what His grace is not: law... which worketh wrath, and is a ministration of death, being the strength of sin which has a dead sting. For when sin is finished (accusing, condemning, tormenting, etc) is brings forth death, the dead end of life + death (grace + law)... an oxymoron with a bad ending.
Thank God the Bible has no such dead end, and because his angel (Paul) plays the last trump it: