Jamieson, Fausset and Brown on Song of Solomon 3:10

10. pillars--supporting the canopy at the four corners; curtains at the side protect the person within from the sun. Pillars with silver sockets supported the veil that enclosed the holy of holies; emblem of Jesus Christ's strength (1Ki 7:21), Margin, "silver," emblem of His purity (Psa 12:6); so the saints hereafter (Re 3:12).

bottom--rather, "the back for resting or reclining on" (Vulgate and Septuagint) [Maurer]. So the floor and mercy seat, the resting-place of God (Psa 132:14) in the temple, was gold (1Ki 6:30).

covering--rather, "seat," as in Le 15:9. Hereafter the saints shall share His seat (Re 3:21).

purple--the veil of the holiest, partly purple, and the purple robe put on Jesus Christ, accord with English Version, "covering." "Purple" (including scarlet and crimson) is the emblem of royalty, and of His blood; typified by the passover lamb's blood, and the wine when the twelve sat or reclined at the Lord's table.

paved--translated, like mosaic pavement, with the various acts and promises of love of Father, Son, and Holy Ghost (Zep 3:17; 1Jo 4:8, 16), in contrast with the tables of stone in the "midst" of the ark, covered with writings of stern command (compare Joh 19:13); this is all grace and love to believers, who answer to "the daughters of Jerusalem" (Joh 1:17). The exterior silver and gold, cedar, purple, and guards, may deter, but when the bride enters within, she rests on a pavement of love.