Well contrary to Watchtower understanding , Abraham, Isaac and Jacob will be in the kingdom of heaven.
Matthew 8:10-11 When Jesus heard it, he marveled, and said to them that followed, Verily I say unto you, I have not found so great faith, no, not in Israel. 11 And I say unto you, That many shall come from the east and west, and shall sit down with Abraham, and Isaac, and Jacob, in the kingdom of heaven.
Hebrews 11: 9-10, 13-16 9 By faith he (Abraham) sojourned in the land of promise, as in a strange country, dwelling in tabernacles with Isaac and Jacob, the heirs with him of the same promise: 10 For he looked for a city which hath foundations, whose builder and maker is God.... 13 These all died in faith, not having received the promises, but having seen them afar off, and were persuaded of them, and embraced them, and confessed that they were strangers and pilgrims on the earth. 14 For they that say such things declare plainly that they seek a country. 15 And truly, if they had been mindful of that country from whence they came out, they might have had opportunity to have returned. 16 But now they desire a better country, that is, an heavenly: wherefore God is not ashamed to be called their God: for he hath prepared for them a city.