John 13:34-35

34. "A new command I give you: Love one another. As I have loved you, so you must love one another.
35. By this all men will know that you are my disciples, if you love one another."

2 Corinthians 6:11-13

11. We have spoken freely to you, Corinthians, and opened wide our hearts to you.
12. We are not withholding our affection from you, but you are withholding yours from us.
13. As a fair exchange--I speak as to my children--open wide your hearts also.

1 Thessalonians 2:8

8. We loved you so much that we were delighted to share with you not only the gospel of God but our lives as well, because you had become so dear to us.

1 John 3:14

14. We know that we have passed from death to life, because we love our brothers. Anyone who does not love remains in death.