The verse I was referring to was Hebrews 4:9. I was reading mainly comments on Hebrews 4;1-9.
You have brought up the question of "another day" several times, so I'll try to address that.
Hebrews 4:6 Seeing therefore it remains that some must enter therein, and they to whom it was first preached entered not in because of unbelief:
4:7 Again, he limits a certain day, saying in David, To day, after so long a time; as it is said, To day if you will hear his voice, harden not your hearts.
4:8 For if Joshua had given them rest, then would he not afterward have spoken of another day.
Pre-understandingThe Sabbath is mentioned as a sign --
A sign that it is God that sanctifies
Adventists often say it is a sign, but very seldom do we hear what the sign symbolizes.
Ezek. 20:12 Moreover also I gave them my sabbaths, to be a sign between me and them, that they might know that I am the LORD that sanctify them.
20:20 And hallow my sabbaths; and they shall be a sign between me and you, that ye may know that I am the LORD your God.
Exodus 31:13 Verily my sabbaths ye shall keep: for it [is] a sign between me and you ..that you may know that I am the LORD that doth sanctify you.
This is an important point in understanding the passage -- the sign of sanctification, is the Sabbath.
Next notice the repeated emphases through Hebrews 3 and 4.
The theme of "hardening the heart" "deceitfulness of sin" rebellion, and unbelief all of which kept Israel from finding the rest.
The author of Hebrews links the "rest" to the seventh-day Sabbath.
Heb. 4:4 For he spake in a certain place of the seventh [day] on this wise, And God did rest the seventh day from all his works.
Gen. 2:3 God blessed the seventh day, and sanctified it, and rested on the seventh day from all His work.This day which God in the beginning sanctified and upon which He rested, became the sign of sanctification -- the sign of setting apart for holy purpose, the sign of rest in God.
What about the words "Today"
and "another day"?
The word "Today" means simply NOW. The word doesn't mean Sabbath day, but rather referring to probationary time when the call to enter God's rest is being given.
Today == NOW === harden not your heart....
It's "Today, harden not your hearts" stop resisting God's sanctification and stop being deceived by sin, Today while probationary time is still open.
The limited day is "Today" . This day if you will hear his call and respond, you can enter the sanctifying rest of God.
They (Israel under Joshua) failed to enter God's rest -- that day is passed. Since their probationary time ended, is there another day == is probationary time still open?
If Joshua had given them rest, then there would be no need for another day --
The "IF" suggests Joshua did NOT give them rest. He merely led them into Canaan. This statement shows this "rest" was not about entering Canaan. This was the whole problem with the Jewish people, they based their faith upon their land -- they were in the promised land. (It's still confusing people today, who think it's all about the land).
Hebrews however is speaking of the "sanctifying rest", which is the opposite of hard hearts and following the deceitfulness of sin.
Was another day of probation open for the Israelite nation?
So ANOTHER DAY (another day after Joshua's time) was needed, more probationary time for Israel --
The call was given during King David's time.
To day if ye will hear his voice,
Psalm 95:8 Harden not your heart, as in the provocation, [and] as [in] the day of temptation in the wilderness:
95:9 When your fathers tempted me, proved me, and saw my work.
95:10 Forty years long was I grieved with [this] generation, and said, It [is] a people that do err in their heart, and they have not known my ways:
95:11 Unto whom I sware in my wrath that they should not enter into my rest.
One "another day" -- was during Ezekiel's time
The call went out.
Jerusalem was about to be destroyed.
Why== six times in Ezekiel 20 the pollution of the Sabbath was mentioned as a reason Jerusalem was about to be destroyed.
Ezekiel calls for Israel to enter the sanctifying rest which the Sabbath represents. He too warns by telling the history of Israel in the wilderness and how they failed by polluting the Sabbath, even though outwardly they kept it.
The sanctifying rest of the Sabbath day was unknown.
They failed -- Jerusalem was destroyed.
At the time Hebrews was written, Israel, as a nation was being given the last "today". It was "another day" of opportunity. A day of great light had come to Israel, as Jesus had walked and taught among them. Justification in Christ was presented, the sanctifying power of the Holy Spirit was demonstrated.
But the nation was rejecting all this. Their Sabbaths were not a "sign that God sanctified them"; they had turned it into a burdensome "works" ordeal with thousands of rules and regulations. Their lives, though outwardly pious, were (as Jesus pointed out) like whitened sepulchers filled with dead bone.
The sanctifying power of God was missing.
Their Sabbath keeping was not a sanctifying rest.
Again forty years had almost slipped past since the sanctifying rest had been presented to them. Their nation was about to be destroyed. Their beautiful temple razed to the ground. The last "today" had come. Today, While it is said, To day if ye will hear his voice, harden not your hearts,
This was "another day", it wasn't during Joshua's time, they couldn't do anything about what happened back then, but they could respond "Today" for they were in "another day" and for them probation was still open.
In Hebrews God calls specific attention to the seventh day Sabbath, when God did rest on the seventh day from all His work. This statement the author connects closely with the call to repentance, and not hardening the heart in disbelief and following the deceitfulness of sin.
The Sabbath is a SIGN that God sanctifies us. It is closely connected with finding the rest from our own works of self-righteousness, and being sanctified by the power of the Holy Spirit.
Far from exonerating Sunday, it is a significant restatement of the importance of the Seventh-day Sabbath.
As God rested on the seventh day after His perfect creation of this world, so we rest in Him as we depend on Him to work out holiness in our lives.
In finding this sanctifying rest we keep God's commandment -- one of which is the very sign of this sanctifying rest -- the keeping of the Seventh day.
Sunday is not holy or sanctified, by God. The seventh-day is holy and sanctified by God, and it is a sign that our God that sanctifies us.
Hebrews, in using a different word in 4:9,
Sabbatismos = Sabbath keeping
Heb. 4:9 There remaineth (it is left, it wasn't done away with) Sabbatismos (keeping of the Sabbath) to the people of God Using this word, instead of the more generic word for "rest" leaves no confusion as to what remains and clinches the connection, between "rest' and "Sabbath keeping".
Keeping the Seventh day Sabbath in it's true meaning, is a sign that we are partaking of Christ's sanctifying rest.