REFINE

Refine-To make pure by taking out waste substance.

       To improve,filter,clarity,sift,distill,fine tune.

Dross is useless,contaminating waste product that must be removed from metal in the refining process.It has no value and its presence in metal diminishes it's value.
For metal to have value ,it's dross must be removed.
Proverb:Take away the dross from the silver,and there shall come forth a vessel for the finer.
All humans are a mixture of precious metal and worthless dross.God is determined to remove the dross from our character.
Sometimes the furnace of affliction is required to perfect our character. Many will have to endure tribulation to have their dross removed.This is the refining process. It will be a fiery trial and difficult to endure.
2Tim:20 but in a great house there are not only vessels of gold and silver,but also of wood and earth and some to honer and some to dishonor.
21:If a man therefore purge himself from these,he shall be a vessel unto honor.,sanctified and meant for the masters use,and prepared unto every good work.
22:Flee also youthful lust,but follow righteousness,faith,charity,peace and with them that are call in the Lord out of a pure heart.
James 4:8 God is able to discern the condition of the heart,whether they are refined silver or full of impurities.
Pro.17:3 the refining pot is for silver and the furnace for gold:but the Lord trieth the hearts.
Isa 48:10 Behold,I have refine thee,but not with silver:I have chosen thee in the furnace of affliction.

ZEC 13:9 And I will bring the third part through the fire and will refine them as silver is refined,and will try them as gold is tried.They shall call on my name,and I will hear them.I will say' this is my people,and they shall say,The Lord is my God.