Psalms 30:11

“Those hast turned for me my mourning into dancing, etc.] This, with what follows, expresses the success he had in seeking the Lord by prayer and supplication; there was a sudden change of things, as it often is with the people of God; sometimes they are mourning by reason of sin, their own and others; or on account of afflictions; or because of spiritual decays; or through the temptations of Satan; or, as it was the case of the psalmist now, because of the hidings of God’s face; but this mourning is exchanged for joy and gladness when the Lord discovers his pardoning love, revives his work in their souls, takes off his afflicting hand from them, rebukes the tempter, and delivers out of his…”

“sackcloth--was used, even by kings, in distress (Ch1 21:16; Isa 37:1) but "gladness," used for a garment, shows the language to be figurative.”

“Thou hast turned for me - In my behalf. That is, God had heard his prayer; he had brought his troubles to an end; he had caused his sorrows to be succeeded by correspondent joy. My mourning into dancing - Joy, exultation, every expression of rejoicing, had been made to succeed his deep sorrows. Compare Psalms 30:5. It was this which he commemorated at the dedication of his house; this joy succeeding scenes of sorrow that he now called to remembrance as he entered the place which he had reared for a permanent abode. The contrast of his circumstances now - in a palace, with every comfort of plenty and peace around him - with his former circumstances which had been so sad, made it proper for…”

“Sackcloth - Given me occasion to put off that sackcloth, which they used to wear in times of mourning, Est 4:1; Psa 35:13; Isa 32:11; Joe 1:13. Girded - With joy, as with a garment, surrounding me on every side. Psalms 30:12”

“turned: Psa 30:5, Psa 126:1, Psa 126:2; Gen 37:35, Gen 45:28; Ch2 20:3, Ch2 20:9, Ch2 20:12, Ch2 20:27, Ch2 20:28; Est 9:22; Isa 25:8; Psa 30:3; Isa 66:10, Isa 66:11; Joh 16:20; Rev 7:14-17, Rev 21:4 dancing: Psa 149:3, Psa 150:4; Sa2 6:14; Ecc 3:4; Jer 31:4, Jer 31:13, Jer 31:14 girded: Neh 8:10; Isa 61:3, Isa 61:10; Luk 15:22 Psalms 30:12”

“(Heb.: 30:12-13) In order to express the immediate sequence of the fulfilling of the prayer upon the prayer itself, the otherwise (e.g., Psa 32:5) usual ו of conjunction is omitted; on הפכתּ וגו cf. the echoes in Jer 31:13; Lam 5:15. According to our interpretation of the relation of the Psalm to the events of the time, there is as little reason for thinking of Sa2 6:14 in connection with מחול, as of Ch1 21:16 in connection with שׂקּי. In place of the garment of penitence and mourning (cf. מחגרת שׂק, Isa 3:24) slung round the body (perhaps fastened only with a cord) came a girding up (אזּר, synon. חגר Psa 65:13, whence אזור, חגרה) with joy. The designed result of such a speedy and radical…”