But if anyone does not provide for his own, and especially for those of his household, he has denied the faith and is worse than an unbeliever … 1 Timothy 5 v 8
If any men or women do not maintain their own relatives, they in effect deny the faith. If they spend on pleasures that which should maintain their families, they have denied the faith, and are worse than infidels. If professors of the gospel give way to any corrupt principle or conduct, they are worse than those who do not profess to believe the doctrines of grace.
It is a God given principle that we provide for our own household (or family).
We are able to continue that principle following our death by giving instructions as to the disposal of our estate.A Will is the cheapest, simplest and most easily recognised method of facilitating this and fulfilling this principle.