Daniel 2:32 (BSB)

The head of the statue was pure gold, its chest and arms were silver, its belly and thighs were bronze,

From Daniel 2. Also in the ESV.

Commentary on Daniel 2:32

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Daniel 2:31-45: Daniel here gives full satisfaction to Nebuchadnezzar concerning his dream and the interpretation of it. That great prince had been kind to this poor prophet in his maintenance and education; he had been brought up at the king's cost, preferred at court, and the land of his captivity had hereby been made much easier to him than to others of his brethren.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Daniel 2:32: This image's head was of fine gold,.... The prophet begins with the superior part of this image, and descends to the lower, because of the order and condition of the monarchies it represents: this signifies the Babylonian monarchy, as afterwards explained; called the "head", being the first and chief of the monarchies; and compared to "fine gold", because of the glory, excellency, and duration of...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on Daniel 2:32: On ancient coins states are often represented by human figures. The head and higher parts signify the earlier times; the lower, the later times. The metals become successively baser and baser, implying the growing degeneracy from worse to worse. Hesiod, two hundred years before Daniel, had compared the four ages to the four metals in the same order; the idea is sanctioned here by Holy Writ.
• Geneva Bible Notes (Reformed), Geneva Bible Study Notes on Daniel 2:32: This image's head [was] of fine gold, his breast and his arms of silver, his belly and his thighs of brass, (q) By gold, silver, brass, and iron are meant the Chaldean, Persian, Macedonian, and Roman kingdoms, which would successively rule all the world until Christ (who is here called the stone) himself comes, and destroys the last.