Isaac is passing on the family blessing, headship of the family. The blessing concerned, the future of that family and particularly the coming into the world of the great descendant, who would be the Messiah, through whom all the nations of the earth would be blessed.
We have to judge spiritually today in all things. Think of God's will for the churches, and how churches should be ordered and organised. We are Baptists, and we stand in that great tradition of independency, believing that every individual congregation is accountable directly to God, and should seek the will of God through his word. There should be no such thing as a denomination with a hierarchy and a rule from above over all the churches. But if you think humanly, rather as Isaac was tempted to do, you might say, ‘But surely things are more secure if you have got a strong national organisation, if you have got a strong leadership to direct the churches. Then individuals cannot go wrong; they cannot stray. Human judgement would be much in favour of strong denominational rule among the churches and very much against independency, which sounds like a recipe for disaster: people wandering off doing what is right in their own eyes. Failing churches receiving no support from stronger churches and so on; that would be disastrous. According to the wisdom of the world you have got to have a big organisation, but what may make sense in the world is not necessarily the same as God's instructions. God's instructions for churches are independency. Individual churches are accountable to him, not denominations. The evidence of history, is that contrary to everything we would think, churches are stronger and survive for longer in the truth as independent entities rather than within denominations. Associations become conduits for error, a means of mass infection of the churches. Furthermore, if an independent church does go liberal, there is nobody to hold it up so that it can perpetuate error, and it dies away of its own accord.