'Day' in the Bible

ye may not harden your hearts, as in the provocation, in the day of the temptation in the wilderness,

but exhort ye one another every day, while the To-day is called, that none of you may be hardened by the deceitfulness of the sin,

for He spake in a certain place concerning the seventh day thus: 'And God did rest in the seventh day from all His works;'

again He doth limit a certain day, 'To-day,' (in David saying, after so long a time,) as it hath been said, 'To-day, if His voice ye may hear, ye may not harden your hearts,'

for if Joshua had given them rest, He would not concerning another day have spoken after these things;

not according to the covenant that I made with their fathers, in the day of My taking them by their hand, to bring them out of the land of Egypt -- because they did not remain in My covenant, and I did not regard them, saith the Lord, --

not forsaking the assembling of ourselves together, as a custom of certain is, but exhorting, and so much the more as ye see the day coming nigh.