Job 17:3

“Lay down now, etc.] A pledge that thou wilt provide a surety, appoint and admit one to plead for me, and that thou wilt hear my cause, and determine it; or “put now”, or “put, I pray thee” f671, thy heart and mind to me and my case, to my petition and request, and grant it: put me in a surety with thee; appoint, provide, and place a surety for me with thee, and let him appear to do his work and office: such an one Jesus Christ is; he is of God the Father’s appointing to be the Mediator between God and men, and who himself voluntarily engaged and agreed to be the surety of the better testament; and this was known to the Old Testament saints, and to Job; and his prayer was the prayer of faith:…”

“Lay down now--namely, a pledge or security; that is, be my surety; do Thou attest my innocence, since my friends only mock me (Job 17:2). Both litigating parties had to lay down a sum as security before the trial. put me in a surety--Provide a surety for me (in the trial) with Thee. A presage of the "surety" (Heb 7:22), or "one Mediator between God and man" (see on Job 16:21). strike hands--"who else (save God Himself) could strike hands with me?" that is, be my security (Psa 119:122). The Hebrew strikes the hand of him for whom he goes security (Pro 6:1).”

“Lay down now - This is evidently an address to God - a repetition of the wish which he had so often expressed, that he might be permitted to bring his cause directly before him; see Job 13:3. The whole passage here is obscure, because we are in a great measure ignorant of the ancient practices in courts of law, and of the ancient forms of trial. The general sense seems to be, that Job desires the Deity to enter into a judicial investigation, and to give him a “pledge” - or, as we should say, a “bond,” or “security” - that he would not avail himself of his almighty power, but would place him on an equality in the trial, and allow him to plead his cause on equal terms; see the notes at Job…”

“Surety - These words contain, an humble desire to God that he would be his surety, or appoint him a surety who should maintain his righteous cause against his opposers. Strike hands - Be surety to me; whereof that was the usual gesture. Job 17:4”

“17:3-5 defend my innocence, O God (literally please keep my pledge with yourself): A pledge (Hebrew ‘erabon) can be a deposit guaranteeing payment (Gen 38:17-20; Exod 22:26-27; Deut 24:10-14; see Prov 20:16; 27:13), so this might suggest atonement. It might also be another reference to Job’s desire for an advocate to plead his case (see study note on Job 16:19-21).”

“put me: Job 9:33; Gen 43:9, Gen 44:32; Pro 11:15, Pro 20:16; Heb 7:22 strike: Pro 6:11, Pro 11:15 \*marg. Pro 17:18, Pro 22:26 Job 17:4”

“3 Lay down now, be bondsman for me with Thyself; Who else should furnish surety to me?! 4 For Thou hast closed their heart from understanding, Therefore wilt Thou not give authority to them. 5 He who giveth his friends for spoil, The eyes of his children shall languish. It is unnecessary, with Reiske and Olsh., to read ערבני (pone quaeso arrhabonem meum = pro me) in order that שׂימה may not stand without an object; שׂימה has this meaning included in it, and the ארבני which follows shows that neither לבך (Ralbag) nor ידך (Carey) is to be supplied; accordingly שׂים here, like Arab. wḍ‛ (wâḍ‛), and in the classics both τιθέναι and ponere, signifies alone the laying down of a pledge. Treated…”