Because it is contained in Scripture, "Behold, I lay in Zion a chief cornerstone, chosen, and precious: He who believes in him will not be disappointed."
Servants, be subject to your masters with all reverence; not only to the good and the gentle, but also to the mean ones. For this is thankworthy, if a man for conscience towards God endures grief, suffering wrongfully ( 1 Peter 2:18-19 ).