The early believers saw themselves as a family because this is the reality. They didn't call themselves family because they share the same belief but because they are truly family, born of the same Father and the same mother.
"For this reason I bow my knees to the Father of our Lord Jesus Christ, from whom the whole family in heaven and earth is named," (Eph 3:14-15).
We are all named from one Father. When we were born on earth we were given the name of our father, it was attached to our name and till today we still carry the name of our father around. So also in Christ, when we were born of the Spirit we were also given God's name. When we became born again we were born into a new family, an everlasting family. All other families would past away because they are only a shadow of the reality of God's family.
This is why Isaiah prophesied that Jesus would be called the Everlasting Father. His Fatherhood is the one that last unto eternity while others would ends. Yes, all other family would cease to exist, there would be nothing like marriage after Christ has marriage his bride. In Christ there is nothing like race, tribe, kins men and many families. There is only one family, Christ is the reality and anything outside of Christ is just a shadow.
Therefore in Christ we have the real family, for we were called outside of our temporary families to join this new and everlasting family. Here we are with our true brothers and sisters people who share the same blood (share the same life which is Christ). The members of this family have the same nature because they share the nature of there Father (2Pet 1:4). They can predict each other action, for they know and understand each other. There relationship is totally informal, personal and intimate.
They meet and gathered on an informal ground and they talk about informal things. They play, laugh, talk and share their life with each other. They could discuss anything with each other and there is no secret among them. They freely expresses themselves to each other because they feel at home when they are together. No need to hide anything, for there is total nakedness. This is the only family that has come to stay, a family that would last unto eternity.
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