I believe to be twice dead, one must hate good and perfect, love, light, God, etc...after knowing God and experiencing the ability to give God. If we can give God to people even by measure, and then hate doing so to the point of approving of giving evil, then we have made our choice to fight God...knowing Him by measure and hating such a measure.
John 15:23-25Authorized (King James) Version (AKJV)
23 He that hateth me hateth my Father also. 24 If I had not done among them the works which none other man did, they had not had sin: but now have they both seen and hated both me and my Father. 25 But this cometh to pass, that the word might be fulfilled that is written in their law, They hated me without a cause.
Hebrews 6:1-8Authorized (King James) Version (AKJV)
6 Therefore leaving the principles of the doctrine of Christ, let us go on unto perfection; not laying again the foundation of repentance from dead works, and of faith toward God, 2 of the doctrine of baptisms, and of laying on of hands, and of resurrection of the dead, and of eternal judgment. 3 And this will we do, if God permit. 4 For it is impossible for those who were once enlightened, and have tasted of the heavenly gift, and were made partakers of the Holy Ghost, 5 and have tasted the good word of God, and the powers of the world to come, 6 if they shall fall away, to renew them again unto repentance; seeing they crucify to themselves the Son of God afresh, and put him to an open shame. 7 For the earth which drinketh in the rain that cometh oft upon it, and bringeth forth herbs meet for them by whom it is dressed, receiveth blessing from God: 8 but that which beareth thorns and briers is rejected, and is nigh unto cursing; whose end is to be burned.