There are many moer allusions to Purgatory in the bible but I must move on.
The fact that the Jews believe in Purgatory, or as they call it Sheol, should be a proof to you that it exists.
Yes, I do know the Orthodox belief of Purgatory. They agree that it exists, but they disagree with some of the details. Here is a link to an answer by an eastern Catholic about the Orthodox belief in Purgatory.
ewtn.com/vexperts/showmessage.asp?Pgnu=2&Pg=Forum25&recnu=31&number=402853
The eary church fathers also agreed on this issue. Notice that there is a quote byy St. John Chrysostom, who was Eastern and is was a doctor of the eastern church.
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From St. John Chrysostom in his Homilies on 1 Corinthians 41:5, A.D. 392: Let us not hesitate to help those who have died and to offer our prayers for them.
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St. Gregory the Great commenting on St. Matthew’s gospel (12:32) states that “In this sentence it is given to understand that many sins can be remitted in this world, but also many in the world to come” - Dial. IV 39 (See Also St. Augustine, De Civ. Dei. XXXXXI 24, 2.).
St. Cyprian speaking of purgatory states that “To be tormented in long pains and to be cleansed and purified from one’s sins by continuous fire, is a different thing from expiating one’s sins all at by suffering (of martyrdom)” - Ep. 55, 20
**St. Augustine : **
“Some suffer temporal punishments only in this life, others only after death, still others both in life and after death, but always before this most strict and most final court” - De Civ. Dei XXI 13
Origen
“For if on the foundation of Christ you have built not only gold and silver and precious stones(1 Cor.,3);but also wood and hay and stubble, what do you expect when the soul shall be separated from the body? Would you enter into heaven with your wood and hay and stubble and thus defile the kingdom of God; or on account of these hindrances would you remain without and receive no reward for your gold and silver and precious stones; Neither is this just. It remains then that you be committed to the fire which will burn the light materials; for our God to those who can comprehend heavenly things is called a cleansing fire. But this fire consumes not the creature, but what the creature has himself built, wood, and hay and stubble. It is manifest that the fire destroys the wood of our transgressions and then returns to us the reward of our great works.” - Homilies on Jeremias, PG 13:445,448(A.D. 244),in CE,577