Is it true that all souls will eventually enter paradise?

Revelation 6 says that when the 5th seal was opened in Heaven, "I saw under the altar the souls of those who had been slain because of the word of God and the testimony they had maintained." Those souls asked how long till their blood was avenged; they were given white robes to wear and told to wait till the full number of the martyrs had been reached. But others are said to be in paradise - the repentant thief on a cross next to Jesus. Note that Jesus did not promise him Heaven, but paradise. Some people think they are the same thing but the Bible makes a difference. Then, elsewhere, it says that some who die will find themselves in torments, but others will be in bliss. The phrase "the bosom of Abraham" is used by Jesus when speaking to Jews. Hell is the place of torment.

The eventual outcome for all eternity is determined on the Day of Resurrection and Judgment when some will be turfed out of hell then consigned to the lake of eternally burning sulphuric fire where Satan & Co will already be.  Read Rev. ch. 20. No way will ALL souls enter paradise.

Souls? What are they? Can you point to one?

NO DEATH LEADS TO THE GRAVE AND THEN U AWAIT THE RESURRECTION OF YOUR DEAD BODY.

Not according to the Bible.

Some people like to THINK so, but it's not Biblical.

I guess that depends on your perception of paradise. Death ends all worry if there is not an afterlife and that is certainly a paradise, just one you will not be aware of.

No it's not true sadly. Souls may or may not enter paradise.

Here the answer: https://www.jw.org/finder?wtlocale=E&docid=2013810&srcid=share

GOD has a wonderful purpose for humans. He created the first man and woman, Adam and Eve, to live in a beautiful garden. His purpose was for them to have children, to make the whole earth a paradise, and to take care of the animals.​—Genesis 1:28; 2:8, 9, 15
Do you think that we will ever live in a paradise? Jehovah tells us: “I have purposed it, and I will also carry it out.” (Isaiah 46:9-11; 55:11) Yes, he will do what he has purposed, and nothing will stop him. Jehovah says that he created the earth for a reason. He “did not create it simply for nothing.” (Isaiah 45:18) He wants people to live all over the earth. What kind of people does God want to live here, and for how long? The Bible says: “The righteous [or, obedient] will possess the earth, and they will live forever on it.”​—Psalm 37:29; Revelation 21:3, 4.

No, actually, the Bible tells us that “evil men and the wicked will be no more, but the meek will possess the earth. The righteous will possess the earth and they will live forever on it” - Psalm 37:9-11, 29.
Think about how all the suffering caused by evil and wicked people will be gone! They will not be there to ruin or harm the paradise or those who live there.
The Bible teaches that those who obey God will live in Paradise. (1 John 2:17) Jesus sent his followers to search for meek people and to teach them how to become acceptable to God. The same work is being done today and God is preparing millions of people for life in the future Paradise on earth. (Matthew 28:19, 20; Zephaniah 2:3)

Learn more about what the Bible teaches about this wonderful hope and why the earth is not a paradise now, in the following link …
https://www.jw.org/en/library/books/good-news-from-god/why-did-god-create-the-earth/ 

When it comes to those who have already died, the Bible tells us that there is hope for them too.
Although some chosen ones are resurrected to life in heaven to rule as kings with Christ, the majority of humans that are resurrected, will be resurrected to life on earth, which will be a paradise. ( Revelation 5:9, 10; Psalm 37:29).

The Bible says that “there is going to be a resurrection of both the righteous and the unrighteous.” (Acts 24:15) The righteous include faithful people, such as Noah, Sarah, and Abraham. As well as all those faithful to the true God throughout history down to our times (Genesis 6:9; Hebrews 11:11; James 2:21) The unrighteous include those who failed to meet God’s standards but did not have the opportunity to learn and follow them.
However, those who become so wicked that they are beyond reform will not be resurrected. When such ones die, they suffer permanent destruction (meaning unconscious death forever) with no hope of a return to life.—Matthew 23:33; Hebrews 10:26, 27; Ecclesiastes 9:5; Psalm 146:4.

For more information on this topic, please see the following link …
https://www.jw.org/en/bible-teachings/questions/what-is-the-resurrection/