Hmmm. I am not an ex JW, but I am a bible believer.
First off- Jesus spoke more of hell then he did of heaven. He warned of an eternal hell. Remember the parable that the kingdom of heaven is like a king who settles accounts with his servants. He first deals with a man who owes him 10,000 talents and was unable to pay. When the man could not pay the master declared that he and his family would be sold off as slaves to repay the debt. The servant begged the king for mercy. The king felt pity and cancelled the debt out of his mercy only. Then the forgiven servant found another that owed him 10 talents and demanded to be paid. The other servant could not pay and the servant who had received mercy threw the other servant in jail. When the king heard about the servant that he'd forgiven he was angered. The king called the servant 'wicked'. The king seaid 'I cancelled all your debt because you begged me to. Shouldn't you have had mercy on your fellow servant just as I had on you?
Jesus ended the parable saying that 'In anger his master turned him over to the jailers to be tortured, until he shgould pay back all that he owed. This is how the heavenly father will treat each of you unless you forgive your brother from your heart'
See? Jesus says that the father will treat the unmerciful harshly.
just saying,
respectfully,
dc