Surely, I would take it upon my shoulder - That is, the book or bill which the Almighty would write in the case. Job says that he has such confidence that what God would record in his case would be in his favor, such confidence that he had no charge of hypocrisy against him, and that he who knew him altogether would not bring such an accusation against him, that he would bear it off triumphantly on his shoulders. It would be all that he could desire. This does not refer to what a judge would decide if the cause were submitted to him, but to a case where an opponent or adversary in court should bring all that he could say against him. He says that he would bear even such a bill on his shoulders in triumph, and that it would be a full vindication of his innocence. It would afford him the best vindication of his character, and would be that which he had long desired.
And bind it as a crown to me - I would regard it as an ornament - a diadem. I would bind it on my head as a crown is worn by princes, and would march forth exultingly with it. Instead of covering me with shame, it would be the source of rejoicing, and I would exhibit it every where in the most triumphant manner. It is impossible for anyone to express a more entire consciousness of innocence from charges alleged against him than Job does by this language.

Surely I would take it upon my shoulder - I would be contented to stand before the bar as a criminal, bearing upon my shoulder the board to which the accusation is affixed. In a book of Chinese punishments now before me, containing drawings representing various criminals brought to trial, in trial, and after trial, charged with different offenses; in almost all of them a board appears, on which the accusation or crime of which they are accused, or for which they suffer, is fairly written. Where the punishment is capital, this board appears fastened to the instrument, or stuck near the place of punishment. In one case a large, heavy plank, through which there is a hole to pass the head, - or rather a hole fitting the neck, like that in the pillory, - with the crime written upon it, rests on the criminal's shoulders; and this he is obliged to carry about for the weeks or months during which the punishment lasts. It is probable that Job alludes to something of this kind, which he intimates he would bear about with him during the interim between accusation and the issue in judgment; and, far from considering this a disgrace, would clasp it as dearly as he would adjust a crown or diadem to his head; being fully assured, from his innocence, and the evidence of it, which would infallibly appear on the trial, that he would have the most honorable acquittal. There may also be an allusion to the manner of receiving a favor from a superior: it is immediately placed on the head, as a mark of respect; and if a piece of cloth be given at the temple, the receiver not only puts it on his head, but binds it there.

Surely I would take it upon my shoulder, [and] bind it [as] a (b) crown to me.
(b) Should not this book of his accusations be a praise and commendation to me?

Surely I would take it upon my shoulder,.... The bill of indictment, the charge in writing; this he would take up and carry on his shoulder as a very light thing, having nothing weighty in it, no charge of sin and guilt to bear him down; nothing but what he could easily stand up under, only some trifling matter, which could not be interpreted sin; for anything of that kind would have been a burden too heavy for him to have borne: or else his sense is, that should he be convicted of any sin, he would openly confess the charge, acknowledge the sin in the most public manner, that being visible which is borne upon the shoulder; and would also patiently bear the afflictions and chastisements that were laid upon him for it: though rather the meaning is, that he should take up and carry such a bill, not as a burden, but as an honour, as one bears a sword of state, or carries a sceptre as an ensign of royalty on his shoulder; to which the allusion may be in Isaiah 9:6; not at all doubting but it would turn out to his glory; which is confirmed by what follows;
and bind it as a crown to me, or "crowns" (q), having various circles of gold hung with jewels; signifying that he would not only take his bill or charge, and carry it on his shoulder, but put it on his head, and wear it there, as a king does his crown; which is an ornament and honour to him, as he should reckon this bill, seeing it would give him an opportunity of clearing himself effectually.
(q) "diademata", Montanus; "corollas", Tigurine version; "coronas", Vatablus, Piscator, Cocceius, Michaelis.

So far from hiding the adversary's "answer" or "charge" through fear,
I would take it on my shoulders--as a public honor (Isaiah 9:6).
a crown--not a mark of shame, but of distinction (Isaiah 62:3).

Take it - As a trophy or badge of honour.