This is the offering - There were three kinds of metals:

1. Gold, זהב zahab, which may properly signify wrought gold; what was bright and resplendent, as the word implies. In Job 28:15, Job 28:16, Job 28:17, Job 28:19, gold is mentioned five times, and four of the words are different in the original.

1. סגור Segor, from סגר sagar, to shut up; gold in the mine, or shut up in its ore.

2. כתם Kethem, from כתם catham, to sign, seal, or stamp; gold made current by being coined; standard or sterling gold, exhibiting the stamp expressive of its value.

3. זהב Zahab, wrought gold, pure, highly polished gold; probably what was used for overlaying or gilding.

4. פז Paz, denoting solidity, compactness, and strength; probably gold formed into different kinds of plate, as it is joined in Exodus 25:17 of the above chapter with כלי keley, vessels. The zahab, or pure gold, is here mentioned, because it was in a state that rendered it capable of being variously manufactured for the service of the sanctuary.

2. Silver, כסף keseph, from casaph, to be pale, wan, or white; so called from its well-known color.

3. Brass, נחשת nechosheth, copper; unless we suppose that the factitious metal commonly called brass is intended: this is formed by a combination of the oxide or ore of zinc, called lapis calaminaris, with copper. Brass seems to have been very anciently in use, as we find it mentioned Genesis 4:22; and the preparation of copper, to transform it into this factitious metal, seems to be very pointedly referred to Job 28:2 : Iron is taken out of the earth, and brass is molten out of the stone; אבן יצוק נחושה eben yatsuk nechushah, translated by the Vulgate, Lapis, solutus calore, in aes vertitur, "The stone, liquefied by heat, is turned into brass." Is it going too far to say that the stone here may refer to the lapis calaminaris, which was used to turn the copper into brass? Because brass was capable of so fine a polish as to become exceedingly bright, and keep its lustre a considerable time, hence it was used for all weapons of war and defensive armor among ancient nations; and copper seems to have been in no repute, but for its use in making brass.

brass. Nechosheth, rather copper; as brass is a factitious metal, composed of copper, and the oxide or ore of zinc, called lapis calaminaris.

April the Thirteenth Pure Gold
"Thou shalt overlay it with pure gold.... And there I will meet with thee." --EXODUS xxv. 10-22. I must put my best into my preparations, and then the Lord will honour my work. My part is to be of "pure gold" if my God is to dwell within it. I must not satisfy myself with cheap flimsy and then assume that the Lord will be satisfied with it. He demands my very best as a condition of His enriching Presence. My prayers must be of "pure gold" if He is to meet me there. There must be nothing vulgar …
John Henry Jowett—My Daily Meditation for the Circling Year

The Word
The third way to escape the wrath and curse of God, and obtain the benefit of redemption by Christ, is the diligent use of ordinances, in particular, the word, sacraments, and prayer.' I begin with the best of these ordinances. The word . . . which effectually worketh in you that believe.' 1 Thess 2:13. What is meant by the word's working effectually? The word of God is said to work effectually when it has the good effect upon us for which it was appointed by God; when it works powerful illumination …
Thomas Watson—The Ten Commandments

Man's Chief End
Q-I: WHAT IS THE CHIEF END OF MAN? A: Man's chief end is to glorify God, and to enjoy him for ever. Here are two ends of life specified. 1: The glorifying of God. 2: The enjoying of God. I. The glorifying of God, I Pet 4:4: That God in all things may be glorified.' The glory of God is a silver thread which must run through all our actions. I Cor 10:01. Whether therefore ye eat or drink, or whatsoever ye do, do all to the glory of God.' Everything works to some end in things natural and artificial; …
Thomas Watson—A Body of Divinity