The departure from Egypt was not the frantic escape of runaway slaves, but the triumphant march of a free and glorious nation showered with divine kindness and love. The imagery of lavish clothing illustrates the profound closeness between God and His people. Much of this majestic apparel points directly toward the splendor of the Tabernacle and the sacred garments worn by the priests. Furthermore, these acts of dressing the nation represent a portion of thirteen specific kindnesses God bestowed upon the Israelites, acts for which He will reward them doubly in the future [רד״ק].
The primary approach among commentators is that God dressed the nation in colorful, checkered, or embroidered fabrics of shifting shades. These beautiful garments are viewed either as glorious spoils taken from defeated enemies [רש״י] or as a symbolic reference to the tunic worn by the priests [מלבי״ם]. To complete their attire, God provided footwear made from the choice leather of a unique creature known as the tachash. Beyond providing physical comfort, these shoes carry a deeper message of victory and dominion. They represent a divine promise that the powerful, honored nations of the world will eventually be subdued, reduced to dust beneath the feet of the Israelites [אדרת אליהו]. Symbolically, this footwear also parallels the trousers worn by the priests during their holy service [מלבי״ם].
The nation was then wrapped in fine linen, an act associated with tying a belt or sash. Both [רש״י] and [מלבי״ם] connect this fine linen directly to the sacred service, explaining that it represents the priestly sash or the linen turbans placed upon the priests' heads. Finally, a luxurious outer layer was draped over the body and head, covering the people in elegant silk [מלבי״ם]. This final covering is understood in two distinct ways by [רש״י]. On a physical level, it refers to the magnificent, colorful garments worn by the High Priest. On a deeper, conceptual level, a midrashic tradition links the root word for silk to the concept of never departing. In this light, the silk covering serves as a beautiful metaphor for the seven clouds of glory that constantly surrounded, covered, and protected the Israelites throughout their journey in the desert.