Having said that, if you will listen further, here are some things to consider:
Why did Martha say what she did, after Lazarus died?
John 11:23-26: Jesus said to her, "Your brother will rise again." Martha said to him, "I know that he will rise again in the resurrection on the last day." Jesus said to her, "I am the resurrection
and the life. Whoever believes in me, though he die, yet shall he live,
and everyone who lives and believes in me shall never die. Do you
believe this?"
There is a resurrection, at the last day. Jesus' comfort to her is not that he is still alive, but in heaven, but that he will rise again. Even though Lazarus died, "yet shall he live". And, everyone who lives and believes in Jesus shall never die - the Bible tells us about God's and Jesus' understanding of that here:
Matthew 22:31-32: And as for the resurrection
of the dead, have you not read what was said to you by God: 'I am the
God of Abraham, and the God of Isaac, and the God of Jacob'? He is not
God of the dead, but of the living."
By Jesus' words, we know that when God said that He is the God of Abraham, Isaac and Jacob, He was referring to the resurrection of the dead. So we understand God's power - he remembers them (Abraham, Isaac and Jacob), and will raise them up on the last day. The resurrection is a key Bible theme and worthy of study. If this all seems strange, perhaps Acts 17:30-32 will be reassuring. For further places to look, read of Abraham sacrificing Isaac in Genesis 22:1-18, taking note of verses 5 and 10 and comparing with Hebrews 11:17-19, and please read 1 Corinthians 15:12-19-23 - however the whole chapter is worth close study, especially about the resurrection. Also, a Bible search on "resurrection" will show many matches and will give a feel for the subject in the New Testament.
The Old Testament is not silent on this subject, indeed, it helps us understand the resurrection. One of the key areas are the promises to Abraham. For example:
Genesis 13:14-17: The
LORD said to Abram, after Lot had separated from him, "Lift up your
eyes and look from the place where you are, northward and southward and
eastward and westward, for all the land that you see I will give to you and to your offspring forever.
I will make your offspring as the dust of the earth, so that if one can
count the dust of the earth, your offspring also can be counted.
Arise, walk through the length and the breadth of the land, for I will
give it to you."
So we see that God promises two things: eternal life for Abraham and his offspring, and a location to have eternal life in - he and his descendants will have the land forever. Indeed, not just the land of Israel, but ALL of the earth will be filled with the glory of the Lord (Numbers 14:21, Habakkuk 2:14). By the Habakkuk quote, it is people that fill the earth with God's glory. All of us, resurrected believers, in Christ, sinless, worshiping God and glorifying Him. I would not say that is the only place we will ever go once we are resurrected (it will not be a jail), but we will be immortal, and be given the land. Our Lord, Christ will reign over the world forever:
Revelation 11:15: Then the
seventh angel blew his trumpet, and there were loud voices in heaven,
saying, "The kingdom of the world has become the kingdom of our Lord and
of his Christ, and he shall reign forever and ever."
and
2 Samuel 7:12-13: When
your days are fulfilled and you lie down with your fathers, I will
raise up your offspring after you, who shall come from your body, and I
will establish his kingdom. He shall build a house for my name, and I
will establish the throne of his kingdom forever.
and
1 Chronicles 17:9-14: And
I will appoint a place for my people Israel and will plant them, that
they may dwell in their own place and be disturbed no more. And violent
men shall waste them no more, as formerly, from the time that I
appointed judges over my people Israel. And I will subdue all your
enemies. Moreover, I declare to you that the LORD will build you a
house. When your days are fulfilled to walk with your fathers, I will
raise up your offspring after you, one of your own sons, and I will
establish his kingdom. He shall build a house for me, and I will
establish his throne forever. I will be to him a father, and he shall
be to me a son. I will not take my steadfast love from him, as I took it
from him who was before you, but I will confirm him in my house and in
my kingdom forever, and his throne shall be established forever.'"
and
Isaiah 9:7: Of the
increase of his government and of peace there will be no end, on the
throne of David and over his kingdom, to establish it and to uphold it
with justice and with righteousness from this time forth and
forevermore. The zeal of the LORD of hosts will do this.
What then of our soul? We have been promised a resurrection - why are we given a body to live immortally when resurrected, as it says in 1 Corinthians 15:35-55?
Romans 6:23: For the wages of sin is death, but the free gift of God is eternal life in Christ Jesus our Lord.
Here we see the two options put before us. God has given you and me the gift of eternal life - living forever. We will live forever, but sinners will not - they are not given the gift of eternal life, and, they will die. The two preceding verses emphasise the same point:
Romans 6:21-22: But what fruit
were you getting at that time from the things of which you are now
ashamed? For the end of those things is death. But now that you have
been set free from sin and have become slaves of God, the fruit you get
leads to sanctification and its end, eternal life.
So why are the wages of sin death? It started in Eden:
Genesis 2:16-17:
And the LORD God commanded the man, saying, "You may surely eat of
every tree of the garden, but of the tree of the knowledge of good and
evil you shall not eat, for in the day that you eat of it you shall
surely die."
We know from the Bible record, that Adam and Eve did not die that exact day - so what does verse 17 mean? The Hebrew in verse 17 for "shall surely die" is "mooth mooth" - two H4191's. H4191 is Strong's number for it. Strong says:
H4191
מוּת
mûth
mooth
A primitive root; to die (literally or figuratively); causatively to kill: - X at all, X crying, (be) dead (body, man, one), (put to, worthy of) death, destroy (-er), (cause to, be like to, must) die, kill, necro [-mancer], X must needs, slay, X surely, X very suddenly, X in [no] wise.
מוּת
mûth
mooth
A primitive root; to die (literally or figuratively); causatively to kill: - X at all, X crying, (be) dead (body, man, one), (put to, worthy of) death, destroy (-er), (cause to, be like to, must) die, kill, necro [-mancer], X must needs, slay, X surely, X very suddenly, X in [no] wise.
The Hebrew word carries with it the meanings of death, kill, destroy, slay, suddenly, in no wise. So to "die die" emphasises that they would definitely die, be destroyed, surely and suddenly be no more. So in that day that they ate that fruit, Adam and Eve were destined to die and be no more.
Genesis 2:7: then the LORD
God formed the man of dust from the ground and breathed into his
nostrils the breath of life, and the man became a living creature.
We came from the dust, and had life breathed into us. We were formed by God.
Genesis 3:19: By the sweat
of your face you shall eat bread, till you return to the ground, for out
of it you were taken; for you are dust, and to dust you shall return."
We are dust, and to dust we return (see also Psalms 37:20; 49:12; 68:2). In a similar way, we, humans, are likened to grass that grows up, but perishes away quickly (Psalms 103:14-16; 37:2, Isaiah 40:6-8; 37:27, James 1:10, but also see Matthew 6:30). We were formed and given life by God, and He is who we should fear/respect and obey. Our souls, our lives are God's:
Ezekiel 18:4: Behold, all souls are mine; the soul of the father as well as the soul of the son is mine: the soul who sins shall die.
Ezekiel 18:20: The soul who sins shall die. The son shall not
suffer for the iniquity of the father, nor the father suffer for the
iniquity of the son. The righteousness of the righteous shall be upon
himself, and the wickedness of the wicked shall be upon himself.
Indeed, God has no pleasure in a person's death (Ezekiel 18:23, Matthew 18:14) - even if they are wicked - God wishes us to obey Him and live. The soul will die - another way to look at it is given in Genesis 6:3, where it says God's Spirit will not abide in man forever:
Genesis 6:3: Then the LORD said, "My Spirit shall not abide in man forever, for he is flesh: his days shall be 120 years."
Without God we are nothing - he sustains everything by His power, so when someone dies, and God's Spirit leaves them. When we die, go to Sheol, return to dust, we will not think, or know, or do anything:
Ecclesiastes 9:10: Whatever
your hand finds to do, do it with your might, for there is no work or
thought or knowledge or wisdom in Sheol, to which you are going.
This is not an isolated quote; see also Psalms 112:9-10, Proverbs 10:28; 11:7. So, what is the result of all this? Even though we are weak and in many ways insignificant, we respect and love the God that loved us before we loved Him, and thank Him for His gift towards us of eternal life through His son, Jesus Christ, and obey Him - not from fear - but from respect and gratitude for all He has done for us.
For further reading, see Revelation 20:12-14, where we read of the book of life, and how the sea, death and hades/hell give up the dead in them, and they are judged. Why would hades/hell grouped with the sea, and death?
So I ask again, why did Martha say "I know that he will rise again in the resurrection on the last day.", and not something else?