(The following is taken from DAVID GUZIK COMMENTARY ON THE BIBLE, Studylight.org)
And above all things have fervent love for one another, for “love will cover a multitude of sins.” Be hospitable to one another without grumbling. As each one has received a gift, minister it to one another, as good stewards of the manifold grace of God. If anyone speaks, let him speak as the oracles of God. If anyone ministers, let him do it as with the ability which God supplies, that in all things God may be glorified through Jesus Christ, to whom belong the glory and the dominion forever and ever. Amen.
Above all things have fervent love for one another: If these are the last days, how much more important is it to love those you are going to spend eternity with? In light of eternity, we must have fervent love for one another.
For love will cover a multitude of sins: Love does cover a multitude of sins, both the sins of the one loving and the sins of the one who is being loved.
“Where love abounds in a fellowship of Christians, many small offences, and even some large ones, are readily overlooked and forgotten. But where love is lacking, every word is viewed with suspicion, every action is liable to misunderstanding, and conflicts about - to Satan’s perverse delight.” (Grudem)
Be hospitable to one another without grumbling: Love will show itself in hospitality. Christians should often open their homes to others and doing it all without grumbling.
As each one has received a gift, minister it to one another: Love will show itself as we give to the church family what God has given us as gifts. As we do so, we are good stewards of the many-faceted (manifold) grace of God given to us.