Genesis 14

After Abraham had freed Lot from his captive kings and enemies to the Sodomites -

"...the king of Sodom said unto Abram, Give me the persons, and take the goods to thyself.
22 And Abram said to the king of Sodom, I have lift[ed] up mine hand unto the LORD, the most high God, the possessor of heaven and earth,
23 That I will not take from a thread even to a shoelatchet, and that I will not take any thing that is thine, lest thou shouldest say, I have made Abram rich..."  (Old Testament | Genesis 14:21 - 23)

I may be assuming a little to much with what Abraham said, but it appears to me that Abraham understood the great wickedness in Sodom.  He didn't want to be held obligated in any manner to such a wicked kingdom.

As we liken the scriptures to ourselves, we could see the same in business or in politics where businesses are politics are corrupt in some manner contrary to our personal values.  I think Abraham is teaching us to be careful in those businesses or politicians that may hang financial or political leverage over our heads.

I am reminded of Paul's counsel -

"Abstain from all appearance of evil."  (New Testament | 1 Thessalonians 5:22)