How do we know that gladness is important for Christians?

Gladness is vital for Christians as it signifies the internal work of the Holy Spirit, transforming sorrow into joy. The believer's gladness isn't dependent on external circumstances but is grounded in the assurance of God's promises and the redemptive work of Christ. As highlighted in the sermon, the Psalmist's declaration, 'I was glad when they said unto me, let us go into the house of the Lord,' indicates an invitation to worship that stirs joy in the believer's heart.

Moreover, the experience of the early Church showcases the importance of gladness in maintaining unity and encouragement among believers. In Acts 2:46-47, it notes how they 'continued daily with one accord in the temple' and 'had gladness and singleness of heart,' demonstrating that joy is inherently tied to community worship and the sharing of the Gospel. Therefore, gladness is not merely an emotional state; it is a profound expression of faith that embodies the believer's response to God's love and grace.