Don’t become partners with those who reject God. 2 Corinthians 6:14 (TM)
When I think of the word "partnership" I think of two distinct relationships. There are marriage partnerships. There are business partnerships. I have both. I would hate to be in either with a person who did not share the same faith.
Partnerships require two people to make daily decisions that will affect each other, the two as a whole, and others who are dependent on that partnership. Even when the partners share the same vision, share the same values, share the same faith and share the same principles, there are still times when the relationship becomes strained. When the partners do not have those things in common, it becomes perilously difficult – if not impossible. When partnerships fail the acute pain is intense and the fallout is widespread.
It’s best just to avoid partnering with those who aren’t walking the same spiritual path as you.