1 Corinthians 14:20 (KJV) states, "Brethren, be not children in understanding: howbeit in malice be ye children, but in understanding be men." This verse is a part of a larger passage in which the apostle Paul provides instructions for the proper use of spiritual gifts in the church. In this particular verse, Paul is exhorting the Corinthian believers to be mature in their thinking and understanding, while maintaining innocence in their hearts and attitudes.

The theme of spiritual maturity is central to this verse. Paul urges the believers to move beyond a simplistic, childlike understanding of spiritual matters and instead strive for a deeper, more mature grasp of the faith. This aligns with other passages in the New Testament that call believers to spiritual growth and maturity, such as Hebrews 5:14 which states, "But solid food is for the mature, who by constant use have trained themselves to distinguish good from evil."

The context of this verse is important to understand its full meaning. The Corinthian church was known for its spiritual fervor and the exuberant exercise of spiritual gifts, but Paul needed to address the disorder and chaos that had crept into their services. In the previous verses, he emphasizes the importance of edification and order in the use of spiritual gifts within the church. He encourages the believers to prioritize the use of the gift of prophecy, which edifies the whole church, over the gift of tongues, which has the potential to cause confusion if not interpreted.

Against this backdrop, Paul's exhortation to "be not children in understanding" takes on added significance. He is cautioning the Corinthians against an immature and self-centered approach to the exercise of their spiritual gifts. Instead, he calls them to be thoughtful and discerning in their use of these gifts, taking into consideration the edification and building up of the entire body of believers.

The contrast between "malice" and "understanding" in this verse is also noteworthy. Paul advises the believers to be innocent and pure in their motives, similar to children, when it comes to malicious intent. However, he expects them to exhibit maturity and discernment in their understanding of spiritual matters. This reflects the broader biblical theme of the importance of maintaining a pure heart and good intentions, while also pursuing wisdom and understanding in our actions and decisions.

In terms of symbolism, the contrast between "children" and "men" serves as a powerful metaphor for the believers' spiritual growth. Children are often associated with innocence, simplicity, and a lack of knowledge and experience. In contrast, men represent maturity, wisdom, and a deeper understanding of the complexities of life and faith. This symbolism underscores the need for believers to progress from a state of spiritual immaturity to one of spiritual maturity, characterized by wisdom and discernment.

In conclusion, 1 Corinthians 14:20 from the King James Version offers a profound exhortation for believers to pursue spiritual maturity and discernment in the exercise of their spiritual gifts. It emphasizes the importance of maintaining pure motives and innocence in our interactions with others, while also prioritizing understanding and wisdom in our spiritual walk. This verse serves as a timeless reminder for believers to strive for growth and maturity in their faith, seeking to edify and build up the body of Christ through their thoughts, words, and actions.