If thou prepare thine heart - Zophar now proceeds to state that if Job even yet would return to God, he might hope for acceptance. Though he had sinned, and though he was now, as he supposed, a hollow-hearted and an insincere man, yet, if he would repent, he might expect the divine favor. In this he accords with the sentiment of Eliphaz, and he concludes his speech in a manner not a little resembling his; see Job 5:17-27.
And stretch out thine hands toward him - In the attitude of supplication. To stretch out or spread forth the hands, is a phrase often used to denote the act of supplication; see 1-Timothy 2:8, and the notes of Wetstein on that place. Horace, 3 Carm. xxiii. 1, Coelo supinas si tuleris manus. Ovid, M. ix. 701, Ad sidera supplex Cressa manus tollens. Trist. i. 10, 21, Ipsc gubernator, tollens ad sidera palmas; compare Livy v. 21. Seneca, Ep. 41; Psalm 63:4; Psalm 134:2; Psalm 141:2; Ezra 9:5.

If thou prepare thine heart - Make use of the powers which God has given thee, and be determined to seek him with all thy soul.
And stretch out thine hands toward him - Making fervent prayer and supplication, putting away iniquity out of thy hand, and not permitting wickedness to dwell in thy tabernacle; then thou shalt lift up thy face without a blush, thou wilt become established, and have nothing to fear, Job 11:14, Job 11:15.
There is a sentiment in Proverbs 16:1, very similar to that in the Job 11:13, which we translate very improperly: -
לאדם מערכי לב leadam maarchey leb.
To man are the preparations of the heart:
ומהוה מענה לשון umeyehovah maaneh lashon.
But from Jehovah is the answer to the tongue.
It is man's duty to pray; it is God's prerogative to answer. Zophar, like all the rest, is true to his principle. Job must be a wicked man, else he had not been afflicted. There must be some iniquity in his hand, and some wickedness tolerated in his family. So they all supposed.

If thou (g) prepare thine heart, and stretch out thine hands toward him;
(g) If you repent, pray to him.

If thou prepare thine heart, and stretch out thine hands towards him. In this and the following verses Zophar proceeds to give some advice to Job; which, if taken, would issue in his future happiness, but otherwise it would be ill with him; he advises him to pray to God with an heart prepared for such service; so some render the last clause in the imperative, "stretch out thine hands (w) towards him"; that is, towards God; for, though not expressed, is implied, whose immensity, sovereignty, and omniscience, Zophar had been discoursing of; and, though stretching out the hands is sometimes a gesture of persons in distress and mournful circumstances, thereby signifying their grief and sorrow, and of others in great danger, in order to lay up anything for safety; and of conquered persons resigning themselves up into the hands of the conqueror; and of such who are desirous of being in friendship, alliance, and association with others; yet it is also sometimes used as for the whole of religious worship, Psalm 44:20; so particularly for prayer, Psalm 88:9; and this was what all Job's friends advised him to, to humble himself before God, to pray for the forgiveness of his sins, and for the removal of his afflictions and deliverance from them; see Job 5:8; in order to which it is proper the "heart should be prepared"; as it is requisite it should be to every good work by the grace of God so to this: and then may it be said to be prepared for such service, when the spirit of God is given as a spirit of grace and supplication, whereby the heart is impressed with a sense of its wants, and so knows what to pray for; and arguments and fit words are put into the mind and mouth, and it knows how to pray as it should; and is enabled to approach the throne of grace with sincerity, fervency, and in the exercise of faith, being sprinkled from an evil conscience by the blood of Jesus, and resigned to the divine will, in all its petitions it is directed to make: now this is the work of God, to prepare the heart; the preparation of the heart, as well as the answer of the tongue, is from the Lord; he is prayed to for it, and it is affirmed he will do it, Proverbs 16:1; but it is here represented as if it was man's act, which is said not to suggest any power in man to do it of himself; at least this is not the evangelic sense of such phrases; for Zophar might be of a more legal spirit, and not so thoroughly acquainted with the evangelic style; but this might be said, to show the necessity of such a preparation, and to stir up to a concern for it, and to expect and look for it from and by the grace of God.
(w) "Expande ad eum manus tuas", De Dieu.

Zophar exhorts Job to repentance, and gives him encouragement, yet mixed with hard thoughts of him. He thought that worldly prosperity was always the lot of the righteous, and that Job was to be deemed a hypocrite unless his prosperity was restored. Then shalt thou lift up thy face without spot; that is, thou mayst come boldly to the throne of grace, and not with the terror and amazement expressed in Job 9:34. If we are looked upon in the face of the Anointed, our faces that were cast down may be lifted up; though polluted, being now washed with the blood of Christ, they may be lifted up without spot. We may draw near in full assurance of faith, when we are sprinkled from an evil conscience, Hebrews 10:22.

The apodosis to the "If" is at Job 11:15. The preparation of the heart is to be obtained (Proverbs 16:1) by stretching out the hands in prayer for it (Psalm 10:17; 1-Chronicles 29:18).

13 But if thou wilt direct thy heart,
And spread out thy hands to Him -
14 If there is evil in thy hand, put it far away,
And let not wickedness dwell in thy tents -
15 Then indeed canst thou lift up thy face without spot,
And shalt be firm without fearing.
The phrase הכין לב signifies neither to raise the heart (Ewald), nor to establish it (Hirz.), but to direct it, i.e., give it the right direction (Psalm 78:8) towards God, 1-Samuel 7:3; 2-Chronicles 20:33; it has an independent meaning, so that there is no need to supply אל־אל, nor take וּפרשׂתּ to be for לפרושׂ (after the construction in 2-Chronicles 30:19). To spread out the hands in prayer is כּפּים (פּרשׂ) פּרשׂ; ידים is seldom used instead of the more artistic כפים, palmas, h.e. manus supinas. The conditional antecedent clause is immediately followed, Job 11:14, by a similarly conditional parenthetical clause, which inserts the indispensable condition of acceptable prayer; the conclusion might begin with הרהיקהוּ: when thou sendest forth thy heart and spreadest out thy hands to Him, if there is wickedness in thy hand, put it far away; but the antecedent requires a promise for its conclusion, and the more so since the praet. and fut. which follow אם, Job 11:13, have the force of futt. exact.: si disposueris et extenderis, to which the conclusion: put it far away, is not suited, which rather expresses a preliminary condition of acceptable prayer. The conclusion then begins with כּי־אז, then indeed, like Job 8:6; Job 13:19, comp. Job 6:3, with עתּה כּי, now indeed; the causal signification of כי has in both instances passed into the confirmatory (comp. 1-Samuel 14:44; Psalm 118:10-12; Psalm 128:2, and on Genesis 26:22): then verily wilt thou be able to raise thy countenance (without being forced to make any more bitter complaints, as Job 10:15.), without spot, i.e., not: without bodily infirmity, but: without spot of punishable guilt, sceleris et paenae (Rosenmller). מן here signifies without (Targ. דּלא), properly: far from, as Job 21:9; 2-Samuel 1:22; Proverbs 20:3. Faultless will he then be able to look up and be firm (מצּק from יצק, according to Ges. 71), quasi ex aere fusus (1-Kings 7:16), one whom God can no longer get the better of.

Heart - To seek God; turning thy bold contentions with God into humble supplications.