In 1 Corinthians 3, Paul admonishes the Corinthian believers for their spiritual immaturity and then explains to them what true spiritual maturity is. First of all, the characteristics of spiritual maturity are manifest through a believer's service and ministry, since that is what we have been called to as Christians. Through Paul's example, then, we see that spiritually mature believers demonstrate humility in their ministry, demonstrate specific obedience to God in their ministry, and demonstrate unity in their ministry.