And he said, Hagar, Sarai's maid. By the use of this epithet, the angel declares, that she still remained a servant, though she had escaped the hands of her mistress; because liberty is not to be obtained by stealth, nor by flight, but by manumission. Moreover, by this expression, God shows that he approves of civil government, and that the violation of it is inexcusable. The condition of servitude was then hard; and thanks are to be given to the Lord, that this barbarity has been abolished; yet God has declared from heaven his pleasure, that servants should bear the yoke; as also by the mouth of Paul, he does not give servants their freedom, nor deprive their masters of their use; but only commands them to be kindly and liberally treated. (Ephesians 6:5.) It is to be inferred also, from the circumstance of the time, not only that civil government is to be maintained, as matter of necessity, but that lawful authorities are to be obeyed, for conscience' sake. For although the fugitive Hagar could no longer be compelled to obedience by force, yet her condition was not changed in the sight of God. By the same argument it is proved, that if masters at any time deal too hardly with their servants, or if rulers treat their subjects with unjust asperity, their rigour is still to be endured, nor is there just cause for shaking off the yoke, although they may exercise their power too imperiously. In short, whenever it comes into our mind to defraud any one of his right, or to seek exemption from our proper calling, let the voice of the angel sound in our ears, as if God would draw us back, by putting his own hand upon us. They who have proudly and tyrannically governed shall one day render their account to God; meanwhile, their asperity is to be borne by their subjects, till God, whose prerogative it is to raise the abject and to relieve the oppressed, shall give them succor. If a comparison be made, the power of magistrates is far more tolerable, than that ancient dominion was. The paternal authority is in its very nature amiable, and worthy of regard. If the flight of Hagar was prohibited by the command of God, much less will he bear with the licentiousness of a people, who rebel against their prince; or with the contumacy of children, who withdraw themselves from obedience to their parents. Whence camest thou? He does not inquire, as concerning a doubtful matter, but knowing that no place for subterfuge is left to Hagar, he peremptorily reproves her for her flight; as if he had said, Having deserted thy station, thou shalt profit nothing by thy wandering, since thou canst not escape the hand of God, which had placed thee there.' It might also be, that he censured her departure from that house, which was then the earthly sanctuary of God. For she was not ignorant that God was there worshipped in a peculiar manner. And although she indirectly charges her mistress with cruelty, by saying that she had fled from her presence; still the angel, to cut off all subterfuges, commands her to return and to humble herself. By which words he first intimates, that the bond of subjection is not dissolved either by the too austere, or by the impotent dominion of rulers; he then retorts the blame of the evil upon Hagar herself, because she had obstinately placed herself in opposition to her mistress, and, forgetful of her own condition, had exalted herself more insolently and boldly than became a handmaid. In short, as she is justly punished for her faults, he commands her to seek a remedy by correcting them. And truly, since nothing is better than, by obedience and patience, to appease the severity of those who are in authority over us; we must more especially labor to bend them to mildness by our humiliation, when we have offended them by our pride.

Hagar, Sarai's maid - This mode of address is used to show her that she was known, and to remind her that she was the property of another.

And he said, Hagar, Sarai's maid,.... He calls her by her name, which might surprise her, and describes her by her character and condition, in order to check her pride, and put her in mind of her duty to her mistress; and to suggest to her, that she ought to have been not where she was, but in the house of her mistress, and doing her service:
whence camest thou? this question the angel asked, not as ignorant, for he that could call her by her name, and describe her character and state, knew from whence she came; but he said this not only to lead on to what he had further to say to her, but to put her upon considering from whence she came, what she had left behind, and what blessings she had deprived herself of; she had not only left her husband and her mistress, but the house of God; for such Abram's family was, where the worship of God was kept up, and where the Lord granted his presence, and indulged with communion with himself:
and whither wilt thou go? he knew her intention and resolution was to go to Egypt, and he would have her think of the place whither she intended to go, as well as that she had left, as that her journey to it was dangerous, through a wilderness; that the country she was bound for was a wicked and an idolatrous one, where she would not have the free exercise of her religion she had embraced, nor any opportunity of attending the pure worship of God, and would be liable to be drawn into a sinful course of life, and into idolatrous worship:
and she said, I flee from the face of my mistress Sarai; this was very ingenuously said, she acknowledges Sarai to be her mistress, and owns that, she had displeased her, and caused her face to be against her; and confesses the truth, that she had fled from her, not being able to bear her frowns and corrections, at least her spirit was too high to submit to them.

And he said, Hagar, Sarai's maid - As a check to her pride. Though she was Abram's wife, yet he calls her Sarai's maid to humble her. As a rebuke to her flight. Sarai's maid ought to be in Sarai's tent, and not wandering in the wilderness. Whence comest thou - Consider that thou art running away both from the duty thou wast bound to, and the privileges thou wast blest with, in Abram's tent. And Whither wilt thou go? - Thou art running thyself into sin in Egypt; if she return to that people, she will return to their gods. And she said, I flee from the face of my mistress - She acknowledges her fault in fleeing from her mistress; and yet, excuses it, that it was from the face, or displeasure, of her mistress.