How do we know charity is true?

To determine the truth of charity in a believer's life, one must look at the characteristics outlined in Scripture, particularly in 1 Corinthians 13. True charity is patient and kind; it does not envy or boast, nor is it proud. These attributes are reflective of God's perfect love, which is given to believers through the Holy Spirit. Additionally, 1 John 2:5 indicates that keeping God’s word is a sign of perfected love within us. The genuine expression of charity should always point to Christ, demonstrating an unwavering love that can withstand trials and temptations, confirming its authenticity.