All the virtue that is saving, and that distinguishes true Christians from others

is summed up in Christian love
This appears from the words of the text, because so many other things are mentioned that natural men may have, and the things mentioned are of the highest kind it is possible they should have, both of privilege and performance, and yet it is said they avail nothing with this; whereas, if any of them were saving, they would avail something without it.
And by the apostle’s mentioning so many and so high things, and then saying of them all, that they profited nothing without charity, we may justly conclude, that there is nothing at all that avails anything without it. Let a man have what he will, and do what he will, it signifies nothing without charity; which surely implies that charity is the great thing, and that everything which has not charity in some way contained or implied in it, is nothing, and that this charity is the life and soul of all religion, without which all things that wear the name of virtues are empty and vain.–Charity and its fruits by Jonathan Edwards

If I gave everything I have to the poor and even sacrificed my body,

I could boast about it;a but if I didn’t love others, I would have gained nothing. (1 Corinthians 13:3)
Great things that these, no natural man ever had or did, and they are the kind of things in which men are exceedingly prone to trust; and yet the apostle declares that if we have them all, and have not charity, we are nothing.–Charity and its fruits by Jonathan Edwards