Willpower

If a man be just, kind, humble and merciful and his qualities are acquired through the will-power -- this is Godlike.

‘Abdu’l-Bahá, Divine Philosophy, p. 98-99

As you no doubt know, the duty of making a will is enjoined upon all Bahá’ís, and in such a will a believer is free to bequeath his or her property in whatever way he or she  wishes.

The Universal House of Justice, Messages 1963 to 1986, p. 318-319