including ‘holy’, ‘holy ones’ and ‘holiness’. Indeed, it is not too much to say that these words reach the heart of the letter, namely, the imputed as well as practical ‘holiness’ of the people of God in Christ (see on 1:30; cf. 1:2). The root idea of ‘holiness’ is two-sided. It is to be like God in his purity and love and unlike fellow humans in their wilfulness and sin. Paul’s words, ‘the unbelieving husband is sanctified in the wife’ and vice versa probably do not mean that the unbeliever somehow
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