4:15 A spirit - An angel in visible shape, otherwise he could not have discerned it. Stood up - Through that excessive horror caused by so glorious, unusual, and terrible a presence.

Job 4:15 Parallel Commentaries

God Far Above Creatures. Job 4:17-21.
God far above creatures. Job 4:17-21. Shall the vile race of flesh and blood Contend with their Creator God? Shall mortal worms presume to be More holy, wise, or just than he? Behold, he puts his trust in none Of all the spirits round his throne: Their natures, when compared with his, Are neither holy, just, nor wise. But how much meaner things are they Who spring from dust, and dwell in clay! Touched by the finger of thy wrath, We faint and vanish like the moth. From night to day, from day to …
Isaac Watts—The Psalms and Hymns of Isaac Watts

What is Meant by "Altogether Lovely"
Let us consider this excellent expression, and particularly reflect on what is contained in it, and you shall find this expression "altogether lovely." First, It excludes all unloveliness and disagreeableness from Jesus Christ. As a theologian long ago said, "There is nothing in him which is not loveable." The excellencies of Jesus Christ are perfectly exclusive of all their opposites; there is nothing of a contrary property or quality found in him to contaminate or devaluate his excellency. And …
John Flavel—Christ Altogether Lovely

Whether Every Punishment is Inflicted for a Sin?
Objection 1: It would seem that not every punishment is inflicted for a sin. For it is written (Jn. 9:3, 2) about the man born blind: "Neither hath this man sinned, nor his parents . . . that he should be born blind." In like manner we see that many children, those also who have been baptized, suffer grievous punishments, fevers, for instance, diabolical possession, and so forth, and yet there is no sin in them after they have been baptized. Moreover before they are baptized, there is no more sin …
Saint Thomas Aquinas—Summa Theologica