Man's tradition.
Here's what scripture says:
Jer 31:31-34,
31 Behold, the days come, saith the LORD, that I will make a new covenant with the house of Israel, and with the house of Judah:
32 Not according to the covenant that I made with their fathers in the day [that] I took them by the hand to bring them out of the land of Egypt; which my covenant they brake, although I was an husband unto them, saith the LORD:
33 But this [shall be] the covenant that I will make with the house of Israel; After those days, saith the LORD, I will put my law in their inward parts, and write it in their hearts; and will be their God, and they shall be my people.
34 And they shall teach no more every man his neighbour, and every man his brother, saying, Know the LORD: for they shall all know me, from the least of them unto the greatest of them, saith the LORD: for I will forgive their iniquity, and I will remember their sin no more.
God said He's make a new covenant with Israel and with Judah. Read the rest of the verses and it's patently obvious we aren't there yet. I've yet to see a lamb and wolf laying down together, nor have I seen a small child playing with a rattlesnake (Isaiah 11).
Now, as Hebrews says, the old covenant is fading, but the new one isn't here yet.
Heb 8:13,
In that he saith, A new [covenant], he hath made the first old. Now that (old covenant) which decayeth and waxeth old [is] ready to vanish away.
The old covenant is
ready to vanish. It will actually vanish when Jesus makes his second advent, not as a lamb for slaughter, but as king of kings and lord of lords.
Maybe it did to you, but I trust the above comment clarified things.
Not sure where you're going with that.
Yes. He also knew with whom He'd make it. He made an OC with Israel and He'll make a NC with Israel. He made no covenant with the church of the body of Christ though.
He certainly started the ball rolling to get it to begin fading away, but it hasn't ended just yet. (Heb 8:13, referenced above)
"Everlasting" is the Hebrew word, "olem." It literally means as far as the eye can see. It's more about the future, not that it is something that existed eternally. The NC will begin at some point, but once it begins it will never end.
All the families will be blessed when Jesus makes his second advent and the new covenant if ratified.