Ash's writing is biblically soaked, and this means his approach to sex and marriage expresses itself differently from most other discussions of the subject (including many "Christian" books). His perspective on marriage and sex begins with the recognition that God gave man and woman to one another for a purpose - that they are to exist in relationship in order to help one another. This is very different from our more normal cultural assumption that relationships are primarily about keeping us from being lonely, or meeting our sexual needs. No, Ash is clear, we are given to one another in order to work together, which is why the Bible says that Eve was given to Adam as a `helper' rather than as a `companion'. "Marriage is not the remedy for loneliness. Not all human beings are able to marry, but all human beings are invited into fellowship with God and with one another in Jesus Christ...we should want marriages that serve God. If they are sexually and personally fulfilled, well and good. But if they do not serve God, no amount of personal fulfilment will make them right." And as part of this approach, sex should become sex in the service of God.
Sex is sex in the service of God when it is fruitful. God's plan for sex was for "pro-creating (creating on his behalf) potential gardeners to join his team." While discussing this, Ash spends some time speaking to those who are unable to have children as this is one of the most painful things anyone can experience. But this pastoral sensitivity does not prevent him from being clear about the fruitful intent of sex in the service of God.
Ash is also very clear about how marriage requires faithfulness, and how sacrificial love (or the marriage institution) is good gift of grace. "Sex within marriage is sex under grace, with nothing to prove. A married couple may `do well' or `do badly' at sex, and cheerfully laugh about it knowing that their relationship is not threatened when they do badly... On the other hand, sex outside marriage is always sex `under law'...always anxious lest at any time the other may decide there is not enough in it for them."
Ash has written a book that should be of help to many people. It will help couples considering marriage, and if its message is taken to heart it should help keep together many marriages that seem to be heading for the precipice. Marriage is certainly not the only way in which to serve God, but in order to be fruitfully, faithfully and sacrificially married, marriage should be for God.