While browsing through some birthday cards in a gift shop, I found one that made me laugh. Its message read: “You are only young once, but you can be immature forever.” That card tickled my funny bone. There is something winsome about never having to grow up, as any fan of Peter Pan can attest.

But we all know that perpetual immaturity is not only inappropriate, it’s also unacceptable. For the Christian, it’s vital that we mature. After we are born again and become followers of Christ, we are not expected to stay spiritual babies. The Scriptures challenge us to grow to be more like Him.

When writing to the church at Corinth—a church with many problems—Paul said that their issues were rooted in a lack of spiritual development. In 1 Corinthians 3:1, he said, “I, brethren, could not speak to you as to spiritual people but as to carnal, as to babes in Christ.”

How do we grow beyond being just spiritual babes? Peter urged, “Grow in the grace and knowledge of our Lord and Savior Jesus Christ” (2 Peter 3:18). We do this by meditating on the Word of God and devoting ourselves to prayer (Ps. 119:97-104; Acts 1:14). Like the troubled church of Corinth, it may be time for us to grow up.