Segregation from humanists and worldy people!?

It would be so easy to just stay out of the world and stay among only believers, but Jesus said go into all the world and preach the gospel. We are to put on the full of armor of God and stand in the day of battle. We are to snatch unbelievers out of the fire and as we are doing this we are to walk in God's ways. We are to discern good and evil and we are commanded to know the word of God His Holy Bible. Jesus said because He was hated, we will be hated also. Count it all joy and rejoice when persecuted.