I Daniel was {d} grieved in my spirit in the midst of my body, and the visions of my head troubled me.

(d) Because of the strangeness of the vision.

King James Translators' Notes

body: Chaldee, sheath

Jamieson-Fausset-Brown Bible Commentary

15. body-literally, "sheath": the body being the "sheath" of the soul.

Matthew Henry's Concise Commentary

7:15-28 It is desirable to obtain the right and full sense of what we see and hear from God; and those that would know, must ask by faithful and fervent prayer. The angel told Daniel plainly. He especially desired to know respecting the little horn, which made war with the saints, and prevailed against them. Here is foretold the rage of papal Rome against true Christians. St. John, in his visions and prophecies, which point in the first place at Rome, has plain reference to these visions. Daniel had a joyful prospect of the prevalence of God's kingdom among men. This refers to the second coming of our blessed Lord, when the saints shall triumph in the complete fall of Satan's kingdom. The saints of the Most High shall possess the kingdom for ever. Far be it from us to infer from hence, that dominion is founded on grace. It promises that the gospel kingdom shall be set up; a kingdom of light, holiness, and love; a kingdom of grace, the privileges and comforts of which shall be the earnest and first-fruits of the kingdom of glory. But the full accomplishment will be in the everlasting happiness of the saints, the kingdom that cannot be moved. The gathering together the whole family of God will be a blessedness of Christ's coming.