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.1 John 3:16
This particular passage called out to me today. I interpret it as also referring beyond the life of our physical bodies. I think that “lives” here also refers to who we are and what we have going on. I think it calls us to not put ourselves first and instead offer ourselves wholly to helping others–regardless of what else we may have going. We just show our love for others by setting aside our priorities to tend to theirs.