In Exodus 25-26, the Lord instructed Moses with details how to have the people build a holy sanctuary where God would be able to live among them. Among the details, they were told to use pure gold for building much of the sanctuary and the furnishings ( table, lampstand, etc). There was much attention to precision and purity and God said "Be sure that you make everything according to the pattern I have shown you". The symbolism of perfection and purity in construction emphasized God's holiness.