Beloved, let us love one another, for love is of God; and everyone who loves is born of God and knows God. – 1John 4:7

We must love, if we are begotten of God, all those who are also born of God. It would be an insult to you if I were to prove that a brother should love his brother. Doth not nature herself teach us that? Those, then, who are born of God ought to love all those of the same household. And who are they? Why, all those who have believed that Jesus is the Christ, and are resting their hopes where we rest ours, namely, on Christ the Anointed One of God. We are to love all such. We are to do this because we are of the family. We believe, and therefore we have been begotten of God. Let us act as those who are of the divine family; let us count it our privilege we are received into the household, and rejoice to perform the lovely obligations of our high position. We look around us and see many others who have believed in Jesus Christ; let us love them because they are of the same kindred… I love God, and therefore I desire to promote God’s truth and to keep God’s gospel free from taint. I am to love all those whom God has begotten, despite the infirmities and errors I see in them, being also myself compassed about with infirmities. Life is the reason for love, the common life which is indicated by the common faith in the dear Redeemer is to bind us to each other.

“Little children, love one another,” is the rule of Christ’s family, may we observe it. May the love of God which has been shed abroad in our hearts by the Holy Ghost which is given unto us, reveal itself by our love to all the saints. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0979.cfm