“Do not be deceived: ‘Evil company corrupts good habits’.”” (1 Corinthians 15:33).
Even though the Apostle Paul is teaching about the corrupting influence of the Sadducees who do not believe in the resurrection, the principle he sets forth is a universal one that is supported by other scriptures.
“Company” refers to every day associations, and “habits” refers to everyday practices and beliefs. The Corinthians are to be aware that associating with these false teachers can have a corrupting influence on them and lead them into sin.
The message for us is a powerful one: when anyone promotes a doctrine—any doctrine—that is not consistent with teaching in the New Testament, we are to beware—we are to note the ways in which it contradicts scriptural teaching and avoid it. As well, we are to avoid associating with those who teach such a doctrine. If we allow them to, they will have a negative influence on our lives and can ultimately cause us to lose our souls.