Membership of the family before us does not depend on any earthly connection. It comes not by natural birth, but by new birth. Ministers cannot impart it to their hearers. Parents cannot give it to their children. You may be born in the godliest family in the land, and enjoy the richest means of grace a Church can supply, and yet never belong to the family of God. To belong to it you must be born again. None but the Holy Ghost can make a living member of His family. It is His special office and prerogative to bring into the true Church such as shall be saved. They that are born again are born, "not of blood, nor of the will of the flesh, nor of the will of man, but of God." (John i. 13.)
Do you ask the reason, of this name which the Bible gives to the company of all true Christians? Would you like to know why they are called "a family"? Listen and I will tell you.
(_a_) True Christians are called "a family" because they have all _one Father_. They are all children of God by faith in Christ Jesus. They are all born of one Spirit. They are all sons and daughters of the Lord Almighty. They have received the Spirit of adoption, whereby they cry, Abba Father. (Gal. iii. 26; John iii. 8; 2 Cor. vi. 18; Rom. viii. 15.) They do not regard God with slavish fear, as an austere Being, only ready to punish them. They look up to Him with tender confidence, as a reconciled and loving parent,--as one forgiving iniquity, transgression, and sin, to all who believe on Jesus,--and full of pity even to the least and feeblest. The words, "Our Father which art in heaven," are no mere form in the mouth of true Christians. No wonder they are called God's "family."
(_b_) True Christians are called "a family," because they all _rejoice in one name_. That name is the name of their great Head and Elder Brother, even Jesus Christ the Lord. Just as a common family name is the uniting link to all the members of a Highland clan, so does the name of Jesus tie all believers together in one vast family. As members of outward visible Churches they have various names and distinguishing appellations. As living members of Christ, they all, with one heart and mind, rejoice in one Saviour. Not a heart among them but feels drawn to Jesus as the only object of hope. Not a tongue among them but would tell you that "Christ is all." Sweet to them all is the thought of Christ's death for them on the cross. Sweet is the thought of Christ's intercession for them at the right hand of God. Sweet is the thought of Christ's coming again to unite them to Himself in one glorified company for ever. In fact, you might as well take away the sun out of heaven, as take away the name of Christ from believers. To the world there may seem little in His name. To believers it is full of comfort, hope, joy, rest, and peace. No wonder they are called "a family."
(_c_) True Christians, above all, are called "a family" because there is so strong _a family likeness_ among them. They are all led by one Spirit, and are marked by the same general features of life, heart, taste, and character. Just as there is a general bodily resemblance among the brothers and sisters of a family, so there is a general spiritual resemblance among all the sons and daughters of the Lord Almighty. They all hate sin and love God. They all rest their hope of salvation on Christ, and have no confidence in themselves. They all endeavour to "come out and be separate" from the ways of the world, and to set their affections on things above. They all turn naturally to the same Bible, as the only food of their souls and the only sure guide in their pilgrimage toward heaven: they find it a "lamp to their feet, and a light to their path." (Psa. cxix. 105.) They all go to the same throne of grace in prayer, and find it as needful to speak to God as to breathe. They all live by the same rule, the Word of God, and strive to conform their daily life to its precepts. They have all the same inward experience. Repentance, faith, hope, charity, humility, inward conflict, are things with which they are all more or less acquainted. No wonder they are called "a family."