Some Christian pastors say, not just with regards to marriage, but also with friendships and the kind of people you associate with, to not hang out with sinners-and to be yoked with Christians.
Two questions I have.
Jesus didnt avoid even sinners caught up in sinful lifestyles. I dont think Christians should shun people, but at what point does associating yourself with a person who practices sin become unequally yoked"?
At what point does having a non christian friend cross the line into being unequally yoked?
According to Mat.11:28-30, we are to be yoked up to Jesus.
The picture here is of an immature, untrained animal yoked up with a mature, trained animal. The larger animal carries the greatest measure of the yoke, while the younger, smaller animal has the lighter load.
A yoke in that sense is a training tool, a teaching, a guidance. Jesus is saying, I will take the heaviness of the yoke, you are burdened with what is light, that you've got things easy.
When one is unequally yoked with an unbeliever, reckless, undisciplined, impulsive, ungodly, in darkness, unrighteous, prone to sin...
Then the (usually) weak believer will end up getting exposed to all those things that they've been redeemed from, but so easily dragged right back into them.
Jesus, on the other hand, is the highest example of Spiritual Maturity. Therefore He could and was able to be among the sinners to minister life to them without getting anywise influenced by their sinfulness.
If you notice yourself slipping back into the old ways according to the former days of being a sinner, then by all means, spend as little time as possible with unbelievers. It's not good for your own spiritual growth to be around them for too long. Pray for them, yes. Stay with them, no.
And, because your pastor spoke of marriage... Stay in the Bible alot, and Pray alot if you find yourself married to a spouse going through the dreaded backslidden condition.