If I speak in the tongues of mortals and of angels, but do not have love, I am a noisy gong or a clanging cymbal. 

And if I ... understand all mysteries and all knowledge, and if I have all faith, so as to remove mountains, but do not have love, I am nothing ...

Love is patient; love is kind; love is not envious or boastful or arrogant or rude. 

It does not insist on its own way; it is not irritable or resentful; it does not rejoice in wrongdoing, but rejoices in the truth. It bears all things, believes all things, hopes all things, endures all things.

Love never ends ... 

As for tongues, they will cease; as for knowledge, it will come to an end ... Faith, hope, and love abide, these three; and the greatest of these is love.