II Cor. 6:14-16a Don't team up with those who are unbelievers. How can goodness be a partner with wickedness? How can light live with darkness? What harmony can there be between Christ and the Devil? How can a believer be a partner with an unbeliever? And what union can there be between God's temple and idols? For we are the temple of the living God.
The message cannot be any clearer. There is a distinct difference between believers and non-believers and in order to keep ourselves in harmony with God, we must be very careful how connected we are with non-believers. The more we let non-believers into our hearts, the more trouble we are going to have staying close to God. Jesus will not live with the Devil. He will not hang around with you if you are hanging around with the Devil.
Our sinful nature is strong and we are easily drawn into sin. We must therefore, do all we can to protect our souls from its influence on us. Ungodly people will draw us away from God much easier than we will draw them to God. Be careful how much you let ungodly people influence your life. It is far better to walk away from them than to burn in their sin.
It is okay to befriend the non-believer; in fact, we must if we are going to reach them for Christ. But, we cannot let our hearts connect with theirs on a deep level. We must reserve our deep heart connections for the godly, those people who will help us draw closer to God.
Be discerning and wise in whom you let close to your heart.