Reflecting on the life of the Kingdom, Paul comes to the conclusion that everyone is fit for it...
Reflecting on the life of the Kingdom, Paul comes to the conclusion that everyone is fit for it, regardless of social status (v. 24). Such a conclusion is natural: if the Kingdom, according to the Savior's word, is "not of this world," then neither a Christian's material nor social position can in any way affect his life in this Kingdom. But it can affect the possibility of bearing witness to the Kingdom. If, for example, one spouse, after conversion, considers it possible to break off relations with his or her other half simply because relations with him or her have stopped being important, such a breakup will naturally become not witness but anti-witness: the rejected husband or rejected wife in that case may reasonably conclude that the new life of the converted spouse is not for them. That is why the apostle apparently considers it necessary for the convert to remain in the family, provided the other spouse does not object and does not demand divorce (vv. 12-16).
For one who has turned to Christ, the family should, as far as possible, be a place of witness and not anti-witness. In the same way, any other human position can become either witness or anti-witness. Thus, for example, the apostle urges both Jews ("the circumcised") and recent pagans converted to Christ to remain what they are, and to do so quite openly (vv. 18-20). The religious differences between Jews and recent pagans were often striking, but their spiritual unity within one community could become the best witness to the reality of the Kingdom, for which religious differences are secondary. The impossibility and absence of this unity, by contrast, would become anti-witness, only confirming that Christianity is not life in the Kingdom at all, but merely one more new religion, no better, though perhaps no worse, than any other.
Of course, there can also be situations in which it would be worth trying to change the position in which one finds oneself. Paul, for example, is firmly convinced that legal dependence is not the best option, and he suggests that slaves free themselves from the condition of slavery if possible (v. 21). The point is not that, being a slave, a person cannot be a resident of the Kingdom (vv. 22-23), but that a free person has more opportunities to bear witness to this Kingdom than a slave does. Of course, a slave can sometimes have more spiritual freedom than someone who is legally free, but formal legal freedom can nevertheless become an earthly image of the spiritual freedom of the residents of the Kingdom, and the apostle suggests not missing the chance to obtain this outward freedom if such a chance appears.
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7:14 For the unbelieving husband hath, in many instances, been sanctified by the wife - Else your children would have been brought up heathens; whereas now they are Christians. As if he had said, Ye see the proof of it before your eyes.