"To learn of Christ means to receive His grace, which is His character. But those who do not appreciate and utilize the precious opportunities and sacred influences granted them on earth, are not fitted to take part in the pure devotion of heaven. Their characters are not molded according to the divine similitude. By their own neglect they have formed a chasm which nothing can bridge. Between them and the righteous there is a great gulf fixed. COL 271.1"
"And beside all this, between us and you there is a great gulf fixed: so that they which would pass from hence to you cannot; neither can they pass to us, that would come from thence."
The EGW passage directly alludes to the 'great gulf fixed' mentioned in Luke 16:26, using the same imagery to describe the separation between the righteous and the unrighteous.