What does it mean that love always perseveres (1 Corinthians 13:7)?

(4) Love “endures all things”. The flesh, assuming the worst, has no hope, and when hope is gone there is no power to endure. Love, hoping all things, strengthens its possessor to endure in the presence of opposition and discouragement.

(1) Love “bears all things”. The flesh can bear very little without showing its resentment. Love can bear all things, and oftentimes in silence.

Further positive features follow. Four are mentioned in verse 7. Love bears, or covers, all things. It never condones unrighteousness of course, yet it never finds its pleasure in publishing other people's misdeeds. It rather believes all that it can discover of the truth; it hopes that all that may be lacking will be supplied in due course; it endures meanwhile every deficiency that may exist. It is evident that the expression, "all things," four times repeated, must be understood as limited by its context. For instance, he who believes "all things," in an unlimited way, would simply be landed into a morass of uncertainties and deceptions.

Hence love does not rejoice over unrighteousness, as malice does, too glad to cover its own evil by that of others; the joy, the sympathies, of love are with the truth, which is personified here as elsewhere. Thus love bears all vexations, believes all possible good (cf. Acts 9:27; Acts 11:22-26), hopes all, in spite of evil manifest enough at present, endures all things, persecutions or afflictions, knowing that we are set for this. God being seen in Christ raises the heart above the depressing power of evil or even suspicion.

The negative qualities have to do with the passive endurance of love (note the word ‘not’); the positive ones have to do with the activity of love — which is comprehensive indeed (note the word ‘all’).

"Believeth all things" is not being suspicious: one believes readily. It "hopeth all things"; it does not mean ill, it does not think of evil. Evil tends to depress the soul, but God is above all that. I find constantly the danger of thinking the evil is greater than the good; but if I bring in God, He is greater than all opposed. Christ was here in the world with no thought of suspicion, and that is the spirit in which we are to walk through the world. If you are always suspecting people, who will trust you? I feel the great difficulty in seeing the evil, which is apt to get the upper hand of your mind; though it is no good deluding oneself that it is not there, because it is there. But love will go on in heaven when there is no evil to think about; prophecies will fail, tongues cease, and knowledge vanish away. "When that which is perfect is come" (v. 10) means the time of glory, when everything is perfect, and these partial things will have ceased. Knowledge now is in degree, "we know in part"; all that kind of learning will pass away. Learning is a proof of ignorance, and this will not be then. Even in divine things we learn, and all that is testimony to ignorance. It gives a great idea of the littleness of man in that way. All these partial instruments of communicating will be done with when I know as I am known: which is, I believe, God's way of knowing; it is not knowing in part; it is not so much the measure as the manner of God's knowing. God can create ideas. I know so far as things are knowable to be known. Now we see "darkly" what we do not see clearly. It is just as I see through a window, instead of seeing the object at once. It is an extraordinary expression; we do not see clearly, but in a mystery, not like plain open things. It is an enigma, though I do not like that word, because it does not suit divine things.

I believe this to be a most important exhortation, and one of the most solemn of all in this verse 8. It is not unlike the one before it: Whatsoever things are lovely, or loveable. Oh, that we might have our minds occupied with such things! Oh, that we might meditate on the gracious, winsome things in the saints, and in others about us! Oh, that we might put the most favourable construction on every report we hear. Love thinketh no evil. Love believeth all things: not the evil things, but the good ones: and where it cannot actually believe all the good it would like, it at least hopeth all things: it hopes the good report is true, and the evil one false.