“Then he [Bezalel] made the basin of copper and its copper stand; he used the mirrors of the women who were organized to serve at the entrance of the tent of meeting.
~Exodus 38:8

Since ancient times, women have played an important role in supporting God’s earthly endeavors.
Here, we see not only that they were self-sacrificing, (for mirrors must have been hard to come by in the desert) but also that they were organized.
Being organized implies being submissive to someone giving instructions.
Nowadays, “the women proclaiming the good news are a large army.” (Ps. 68:11)
I am going to make a rough estimate here and say that 75-80% of the time you see Jehovah’s Witnesses preaching, they will be women.
This might be because women tend to be more social than men, or more inclined to be verbally expressive, or perhaps in many cultures it is still more typical for the mother to stay at home and watch the kids, which gives some women a certain degree of flexibility in their schedules.
When we meet to make arrangements to go out and visit people, it is important to do it in an organized manner.
We must take to heart the various instructions we receive during our regular weekly meetings and carry them out as closely as possible while still using common sense.
Although we do not make up a literal army, we have to be willing to take directions through God’s chain of command.
By doing so, the worldwide congregation as a whole works more efficiently and we receive God’s blessing.
“For God is a God not of disorder but of peace.” (1 Cor. 14:33)

The half shekel for each individual was half a shekel by the standard shekel of the holy place for every man who was among those registered from 20 years of age and up, amounting to 603,550.
~Exodus 38:26

Mosaic law is crystal clear when drawing the line between boy and man.
20 years of age is a constant used throughout the Hebrew Scriptures for when a man was to be registered in order that he may serve the nation.
In this context, we see that even if a young man was still living with his parents, he was expected to make his own monetary contribution toward the Tabernacle building project.
Christian parents make a genuine effort to ‘go on bringing [their children] up in the discipline and admonition of Jehovah,’ (Eph. 6:4).
Upon entering adulthood, every person must decide for him/herself whether or not they will continue in that path, building up their own personal relationship with God without relying on their parents to tell them what is right or wrong.
Young Christian adults who vow to serve God are expected to forge their own name in spiritual terms and make their own spiritual contributions instead of lazily living off of their parents’ good name and works.