Human Relationship Types

There are two basic human relationships:

- covenant. Ex: marriage, father-son. These relationships reflect how the Lord deals with the believer. They are a strong relationship. How can a father abandon his son?

- commercial. Ex: seller-buyer. This is very weak relationship. The buyer may choose freely among sellers, so the seller must always improve his business to attract and maintain buyers. 

There are some relationships that are in the middle.

We contracted a housekeeper around 13 years ago. She was very diligent in her service and we were very fortunate to contract her. At first, I was reluctant about her, but I began to develop a very open friendship. 

In Proverbs 29:21

A servant pampered from youth will turn out to be insolent.

I knew this from the Bible and I should have paid more attention because she really became insolent. She does not see herself as an employee. She rejects orders in a insolent way.

This type of relationship is neither a covenant nor commercial. Something in between. I am considering that these are the worse kind of relationships because it is hard to break it without pain as in a commercial relationship although nobody expects the kind of fidelity from a covenant relationship. As it is hard to break, there is some kind of laziness that could not exist in a commercial relationship.

I would like to ask Solomon how to deal with a servant. How to keep things working in a friendly way, but not so friendly to get insolence. 
These thoughts make me ask:
- what kind of relationship should we have in a church? 
Christians call one another brothers in Jesus - a covenant relationship.
Let us suppose that employer and employee belongs to the same church. They are calling one another brothers in the church, but are they brothers in a daily basis? This kind of relationship would not create insolent servants? Would Solomon answer me?