¹⁶ This is how we know what love is: Jesus Christ laid down his life for us. And we ought to lay down our lives for our brothers and sisters. ¹⁷ If anyone has material possessions and sees a brother or sister in need but has no pity on them, how can the love of God be in that person? ¹⁸ Dear children, let us not love with words or speech but with actions and in truth.

¹⁹ This is how we know that we belong to the truth and how we set our hearts at rest in his presence: ²⁰ If our hearts condemn us, we know that God is greater than our hearts, and he knows everything. ²¹ Dear friends, if our hearts do not condemn us, we have confidence before God ²² and receive from him anything we ask, because we keep his commands and do what pleases him. ²³ And this is his command: to believe in the name of his Son, Jesus Christ, and to love one another as he commanded us. ²⁴ The one who keeps God’s commands lives in him, and he in them. And this is how we know that he lives in us: We know it by the Spirit he gave us.

New International Version (NIV) - for other versions see BibleGateway.com