1 Corinthians 6:9-11, Know ye not that the unrighteous shall not inherit the kingdom of God?

Paul is warning the believers in Corinth that those who live unrighteously—specifically listing behaviors like fornication, idolatry, adultery, effeminacy, abuse of oneself with mankind ( interpreted as certain sexual sins), theft, greed, drunkenness, reviling, and extortion—will not inherit the kingdom of God. The emphasis is on the seriousness of these sins and the importance of living according to God's standards.