One of the reasons the concept of being “adopted into the family” and “belonging to the family (or household) of God” is so dear to me is that I think it speaks to the assurance of our place in it and the security of that familial tie. I believe John was earnest in his desire for the recipients of his letter to have assurance in their salvation: “These things I have written to you who believe in the name of the Son of God, so that you may know that you have eternal life” (1 John 5:13).
When serious Christians share a mutual love for God’s Word, it can be a wonderful thing. It can open up all sorts of possibilities for positive fellowship in the LORD. However, different backgrounds and beliefs, different stages of spiritual growth, and different levels of skill in handling the Word of God can lead to division in the Body of Christ when questions arise over proper doctrine.
How blessed are those who are accepted into the household of God. Paul spoke of the Gentile saints in the following verse: “So then ye are no more strangers and sojourners, but ye are fellow citizens with the saints, and of the household of God” (Ephesians 2:19 ASV). Scripture shows that salvation through the Son of God was carefully planned from the beginning, for the Jew first but also for the Gentiles.
There is one house of God, and there is one foundation that house is built upon. The house of God must be built upon the sure and solid foundation of Jesus Christ alone and His true Gospel. There are many who try to enter into the house of God and teach and build upon it, but if they are not building on the true foundation, all is a loss, and there is destruction.
What is the Church made up of? What are you and I? Are we members of a club, indentured servants, part of a sales team, loyal customers, savvy consumers, or a group of friends? Christians today vary all over the map in how they see themselves and others in the Church.