"God, all will not be rocked to sleep in the cradle of carnal security. There will be faithful ones who will discern the signs of the times. While a large number professing present truth will deny their faith by their works, there will be some who will endure unto the end. 5T 10.1"
"And because iniquity shall abound, the love of many shall wax cold. But he that shall endure unto the end, the same shall be saved."
The phrase "endure unto the end" is a direct quote and the context of apostasy and faithfulness aligns well.