I would appreciate it is someone with a hardback copy of Keil & Delitzsch would check page 819 of vol. 9 and see if the word "steadfast" is spelled without the "a" as is shown in the quote below.
If, then, it must remain sealed or not understood till the time of the end, it must have lain unused and useless for centuries, while it was given for the very purpose of reflecting light on the ways of God for the pious in all times, and of imparting consolation amid their tribulations to those who continued stedfast in their fidelity.
Thanks in advance.