2 CORINTHIANS 6:14
"Do not team up with those who are unbeliever's. How can righteousness be a partner with wickedness? How can light live with darkness?"
There is no harmony between Jesus Christ and the devil! So the question is how can a believer be a partner with an unbeliever? The picture the Lord paints is being unequally yoked. When two oxen of different attitudes and beliefs are pulling the load they do not work well together and they have different behaviors. The results are predictable and not good. We make it hard on ourselves when we make alliances with non believers. There is a major inconsistency in our beliefs and our actions. Right living and right standing with God compels an entire different set of principals and actions that are not consistent with those who do not fear God
Believer's tend to seek the light and the truth. Non believer's tend to seek darkness and lawlessness and try to avoid the light. How can light fellowship with darkness? We must remember that God said that He would live in us, and walk among us. We are to be His people and He is our God. We are His sons and daughters and He welcomes us to His heart. He wants us to separate ourselves from the filth and unbelief that is associated with non believers. The reason is that the two positions are diametrically opposed to each other in every way.
In this life we are always a part of a team in one sense or another. The family is a team. Your partners in a business and its employees are a team. Your political party is a team. Your church is a team. So it makes perfect sense for us to always be attracted and attempt to be like minded on our team. We should be in harmony if we hope to succeed and be compatible. Heed the Lord's advice and save yourself as much difficulty and pain as possible. When you team up for marriage, make sure you are equally yoked and of the same mind and belief. Teach your family and make sure they are an equal part of the team. Seek employment and political parties that have your common beliefs and share your values. WHOSE ON YOUR TEAM?