He; either,
1. The messenger; or rather,
2. The sick man. Shall pray unto God; being engaged and encouraged to do so, either by the aforesaid gracious message, or by his miraculous recovery through God's goodness. He will be favourable unto him, in hearing and answering his prayers, which before he seemed to neglect. He shall see his face with joy; either,
1. God will look upon the man with a smiling or well-pleased countenance; whereas before he either hid his face from him, or frowned upon him. Or,
2. The man shall then be imboldened and encouraged to look God in the face with comfort and joy; which before he was, not without cause, afraid to do; but now he shall find that God is reconciled to him by the blessed effects of it, both in his body and in his conscience. His righteousness, i.e. according to his righteousness, or the fruit of his righteousness; as on the contrary, iniquity is oft put for the punishment of iniquity. The sense is, he will deal with him as with one reconciled to him through the Mediator, and sincerely repenting of and turning from his former sins unto the serious practice of righteousness and true holiness, and therefore must needs be favourable to him, as he hath declared and engaged himself to be in such cases.