'Former Days' in the Bible

And he shall separate unto Jehovah the days of his separation, and shall bring a he-lamb a year old for a trespass-offering; but the former days shall be void, because his separation was defiled.

Say not thou, What is the cause that the former days were better than these? for thou dost not inquire wisely concerning this.

But now I will not be unto the remnant of this people as in the former days, saith Jehovah of hosts.

But call to remembrance the former days, in which, after ye were enlightened, ye endured a great conflict of sufferings;