Despite the hundreds, if not thousands, of eternal existence beliefs or contemplations, the reality is that eternal life will be spent (alive) in one of two places:
Heaven or Hell
is everlasting life with God in His Kingdom which is infinitely greater than anyone could possibly imagine. Read the 21st and 22nd chapters of the Book of Revelation.
is being cast alive into an everlasting lake of fire. 10 Trillion years from now, will be just the beginning. The same can be said of Heaven. There is a judgment for non-believers and false Christians- the Great White Throne Judgment, which will take place the moment you die if you're in one of those two categories. Read about it here in Revelation 20:11-15
Everlasting paradise vs. everlasting lake of fire.
It doesn't matter if you don't believe in this. This is reality. Heaven or Hell. Your choice.
16 For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
6 Jesus said to him, “I am the way, the truth, and the life. No one comes to the Father except through Me.
Romans 10:9-10 NKJV
9 that if you confess with your mouth the Lord Jesus and believe in your heart that God has raised Him from the dead, you will be saved. 10 For with the heart one believes unto righteousness, and with the mouth confession is made unto salvation.
The redemption of sin was paid for on the cross by Jesus Christ through His death, blood atonement, and being risen 3 days later into Heaven.
All you have to do to receive His blessing for your life through His sacrifice at the cross is believe in Him and receive it. It's not something you do through your own works.
Your sins are forgiven because of Jesus Christ at the Cross. His blood atonement covers all sin, but there are significant passages that warn against those who practice lawlessness:
New King James Version
I Never Knew You
21 “Not everyone who says to Me, ‘Lord, Lord,’ shall enter the kingdom of heaven, but he who does the will of My Father in heaven. 22 Many will say to Me in that day, ‘Lord, Lord, have we not prophesied in Your name, cast out demons in Your name, and done many wonders in Your name?’ 23 And then I will declare to them, ‘I never knew you; depart from Me, you who practice lawlessness!’
A Psalm of David.
37 Do not fret because of evildoers,
Nor be envious of the workers of iniquity.
2 For they shall soon be cut down like the grass,
And wither as the green herb.
3 Trust in the Lord, and do good;
Dwell in the land, and feed on His faithfulness.
4 Delight yourself also in the Lord,
And He shall give you the desires of your heart.
5 Commit your way to the Lord,
Trust also in Him,
And He shall bring it to pass.
6 He shall bring forth your righteousness as the light,
And your justice as the noonday.
7 Rest in the Lord, and wait patiently for Him;
Do not fret because of him who prospers in his way,
Because of the man who brings wicked schemes to pass.
8 Cease from anger, and forsake wrath;
Do not fret—it only causes harm.
9 For evildoers shall be cut off;
But those who wait on the Lord,
They shall inherit the earth.
10 For yet a little while and the wicked shall be no more;
Indeed, you will look carefully for his place,
But it shall be no more.
11 But the meek shall inherit the earth,
And shall delight themselves in the abundance of peace.
12 The wicked plots against the just,
And gnashes at him with his teeth.
13 The Lord laughs at him,
For He sees that his day is coming.
14 The wicked have drawn the sword
And have bent their bow,
To cast down the poor and needy,
To slay those who are of upright conduct.
15 Their sword shall enter their own heart,
And their bows shall be broken.
16 A little that a righteous man has
Is better than the riches of many wicked.
17 For the arms of the wicked shall be broken,
But the Lord upholds the righteous.
18 The Lord knows the days of the upright,
And their inheritance shall be forever.
19 They shall not be ashamed in the evil time,
And in the days of famine they shall be satisfied.
20 But the wicked shall perish;
And the enemies of the Lord,
Like the splendor of the meadows, shall vanish.
Into smoke they shall vanish away.
21 The wicked borrows and does not repay,
But the righteous shows mercy and gives.
22 For those blessed by Him shall inherit the earth,
But those cursed by Him shall be cut off.
23 The steps of a good man are ordered by the Lord,
And He delights in his way.
24 Though he fall, he shall not be utterly cast down;
For the Lord upholds him with His hand.
25 I have been young, and now am old;
Yet I have not seen the righteous forsaken,
Nor his descendants begging bread.
26 He is ever merciful, and lends;
And his descendants are blessed.
27 Depart from evil, and do good;
And dwell forevermore.
28 For the Lord loves justice,
And does not forsake His saints;
They are preserved forever,
But the descendants of the wicked shall be cut off.
29 The righteous shall inherit the land,
And dwell in it forever.
30 The mouth of the righteous speaks wisdom,
And his tongue talks of justice.
31 The law of his God is in his heart;
None of his steps shall slide.
32 The wicked watches the righteous,
And seeks to slay him.
33 The Lord will not leave him in his hand,
Nor condemn him when he is judged.
34 Wait on the Lord,
And keep His way,
And He shall exalt you to inherit the land;
When the wicked are cut off, you shall see it.
35 I have seen the wicked in great power,
And spreading himself like a native green tree.
36 Yet he passed away, and behold, he was no more;
Indeed I sought him, but he could not be found.
37 Mark the blameless man, and observe the upright;
For the future of that man is peace.
38 But the transgressors shall be destroyed together;
The future of the wicked shall be cut off.
39 But the salvation of the righteous is from the Lord;
He is their strength in the time of trouble.
40 And the Lord shall help them and deliver them;
He shall deliver them from the wicked,
And save them,
Because they trust in Him.
No Weapon Formed Against You Will Prosper
17 No weapon formed against you shall prosper,
And every tongue which rises against you in judgment
You shall condemn.
This is the heritage of the servants of the Lord,
And their righteousness is from Me,”
Says the Lord.
*The key here is are you truly a servant of the Lord?
What about "Good People"?
Again, it's not about being a good person. It's about receiving Jesus Christ as your Lord and Savior, believing in His blood atonement at the cross for your sin, and His rise from death 3 days later into Heaven and following His way in the Bible.
You can't just be a "good person" and get to Heaven. Unfortunately "good people" who have not received Jesus Christ as their Lord and Savior will perish forever in the Lake of Fire.