God’s love in us makes it possible for us to withstand all stress and difficulty. One meaning of the word for “beareth (stego) has to do with endurance, or to put up with annoyance or difficulty; to forbear. We see it this way in 1 Thessalonians 3:5 where it is translated “forbear” and is talking about endurance. Paul also put up with all things that he might not hinder the gospel in 1 Corinthians 9:12. God’s love holds back, refrains, and is tolerant and patient in all circumstances. It endures, remains steady, constant without complaint. It can get under the load and bear it.
God’s love also protects, covers, and keeps off anything which threatens the benefit and welfare of another. The word for beareth (stego) also includes the ideas of: to protect or keep by covering, to roof over, to cover with silence, to keep secret, to ward off, and to support. So bearing here seems to mean a protecting, covering from unnecessary hurt or harm. It is a shield against hardships.
It is also a cover for things in others that might be different from us or not our preferences where sin is not the issue. We are to bear with people, different from us in personality, preference, and peculiarities without attempting to draw attention to those differences in a very negative or harmful way or just to make them look bad. We cover over what might be displeasing and protect, guard, shield or bear with a person when there is no sin involved. Love takes no delight in exposing the flaws and weaknesses of others.
It certainly does not mean we cover over sin, or conceal sin, and let it go on and on without attempting to restore a sinning brother. It doesn’t mean to look the other way or pretend the sin is not there. Galatians 6:1-4 tells us to restore not conceal. But even in Biblical restoration according to the principles for handling offenses in Matthew 18:15-17 there is a concern for privacy and involving others only if necessary to reconcile a situation. There is no sense of delighting in exposing the sins and weaknesses of others but rather grieving.