The response was a little unusual. Surely other investments like McDonald's or Microsoft held a better return than gold. Christian character needs our attention. Discipline and self-control are to be the focus. The quality of the new nature's character demands an active purging of the dross and a willingness to submit to the heat necessary to refine the character.
Temperance is the self-control and discipline that applies love to our daily actions.
Such discipline can relieve suffering in the Church. Peter knew that with trouble ahead, the brethren would need each other. Peter applied such discipline in his life. He encouraged the brethren to be hospitable. This love in training is not something that is instantly developed.