See in these verses,
I. The power of provocation. Jacob's natural temper was mild and calm, and grace had improved it; he was a smooth man, and a plain man; and yet Laban's unreasonable carriage towards him put him into a heat that transported him into a heat that transported him into some vehemence, Gen 31:36, Gen 31:37. His chiding with Laban, though it may admit of some excuse, was not justifiable, nor is it written for our imitation. Grievous words stir up anger, and commonly do but make bad worse. It is a very great affront to one that bears an honest mind to be charged with dishonesty, and yet even this we must learn to bear with patience, committing our cause to God.
II. The comfort of a good conscience. This was Jacob's rejoicing, that when Laban accused him his own conscience acquitted him, and witnessed for him that he had been in all things willing and careful to live honestly, Heb 13:18. Note, Those that in any employment have dealt faithfully, if they cannot obtain the credit of it with men, yet shall have the comfort of it in their own bosoms.
III. The character of a good servant, and particularly of a faithful shepherd. Jacob had approved himself such a one, Gen 31:38-40. 1. He was very careful, so that, through his oversight or neglect, the ewes did not cast their young. His piety also procured a blessing upon his master's effects that were under his hands. Note, Servants should take no less care of what they are entrusted with for their masters than if they were entitled to it as their own. 2. He was very honest, and took none of that for his own eating which was not allowed him. He contented himself with mean fare, and coveted not to feast upon the rams of the flock. Note, Servants must not be dainty in their food, nor covet what is forbidden them, but in that, and other instances, show all good fidelity. 3. He was very laborious, Gen 31:40. He stuck to his business, all weathers; and bore both heat and cold with invincible patience. Note, Men of business, that intend to make something of it, must resolve to endure hardness. Jacob is here an example to ministers; they also are shepherds, of whom it is required that hey be true to their trust and willing to take pains.
IV. The character of a hard master. Laban had been such a one to Jacob. Those are bad masters, 1. Who exact from their servants that which is unjust, by obliging them to make good that which is not damaged by any default of theirs. This Laban did, Gen 31:39. Nay, if there has been a neglect, yet it is unjust to punish above the proportion of the fault. That may be an inconsiderable damage to the master which would go near to ruin a poor servant. 2. Those also are bad masters who deny to their servants that which is just and equal. This Laban did, Gen 31:41. It was unreasonable for him to make Jacob serve fro his daughters, when he had in reversion so great an estate secured to him by the promise of God himself; as it was also to give him his daughters without portions, when it was in the power of his hands to do well for them. Thus he robbed the poor because he was poor, as he did also by changing his wages.
V. The care of providence for the protection of injured innocence, Gen 31:42. God took cognizance of the wrong done to Jacob, and repaid him whom Laban would otherwise have sent empty away, and rebuked Laban, who otherwise would have swallowed him up. Note, God is the patron of the oppressed; and those who are wronged and yet not ruined, cast down and yet not destroyed, must acknowledge him in their preservation and give him the glory of it. Observe, 1. Jacob speaks of god as the God of his father, intimating that he thought himself unworthy to be thus regarded, but was beloved for the father's sake. 2. He calls him the God of Abraham, and the fear of Isaac; for Abraham was dead, and had gone to that world where perfect love casts out fear; but Isaac was yet alive, sanctifying the Lord in his heart, as his fear and his dread

The fear of Isaac - It is strange that Jacob should say, the God of Abraham and the Fear of Isaac, when both words are meant of the same Being. The reason perhaps was this; Abraham was long since dead, and God was his unalienable portion for ever. Isaac was yet alive in a state of probation, living in the fear of God, not exempt from the danger of falling; therefore God is said to be his fear, not only the object of his religious worship in a general way, but that holy and just God before whom he was still working out his salvation with fear and trembling, fear lest he should fall, and trembling lest he should offend.

Now therefore, come thou, let us make a covenant, I and thou,.... Let us be good friends, and enter into an alliance for mutual safety, and make an agreement for each other's good. Laban perceiving that Jacob's God was with him, and blessed him, and made him prosperous, and protected him, was fearful, lest, growing powerful, he should some time or other revenge himself on him or his, for his ill usage of him; and therefore was desirous of entering into a covenant of friendship with him:

and let it be for a witness between me and thee; that all past differences are made up, and former quarrels subside, and everything before amiss is forgiven and forgotten, and that for the future peace and good will subsist; of which a covenant made between them would be a testimony.

in the day the drought . . . and the frost by night--The temperature changes often in twenty-four hours from the greatest extremes of heat and cold, most trying to the shepherd who has to keep watch by his flocks. Much allowance must be made for Jacob. Great and long-continued provocations ruffle the mildest and most disciplined tempers. It is difficult to "be angry and sin not" [Eph 4:26]. But these two relatives, after having given utterance to their pent-up feelings, came at length to a mutual understanding, or rather, God influenced Laban to make reconciliation with his injured nephew (Pro 16:7).