Hi Mikeyou wrote I had originaly asked the question and I think I was focused in a bit more on David.Did some digging around on the net and came to pretty much the same conclusion as what is here.Maybe I was hoping there was something more explicit in reconciling this issue with our modern thought and with New Testament instruction.Here are some New Testament precepts.1 Corinthians 6:12 All things are lawful unto me, but all things are not expedient: all things are lawful for me, but I will not be brought under the power of any. {expedient: or, profitable}1 Corinthians 10:23 All things are lawful for me, but all things are not expedient: all things are lawful for me, but all things edify not. {expedient: or, profitable}David, was a great saint. He was, however, living in an era where God had declared many things 'unlawful'. That didn't mean that all 'lawful' things were expedient or edifying. It just meant that during that time they were not unlawful.Polygamy and slavery are not specifically declared as 'unlawful' in the New Testament either. However, we have a 'law of Christ' revealed in the New Testament that we do to others as we would have them do to us. This 'ticking time bomb' was to be the death of polygamy and slavery. Paul sent Onesimus back to Philemon as a slave. However, he set this time bomb ticking... receive him... not now as a bond-slave... but as a brother... receive him as myself. How long could slavery continue in Philemon's household with this attitude abroad? Similarly Christ's monogamous love for His bride was the to be the death of polygamy; Husbands, love your wives, even as Christ...(I shortened this quote purposely to make the next point). The early Christians were to live 'as Christ'. It is no accident that it was devout evangelical Christians who made slave trading illegal and who transformed conditions is prisons. For the Christian, the law of Christ, is genuinely summed up in one word "thou shalt love". Everything else is consequential.