"are as immutable as the eternal throne. Not one command has been annulled, not a jot or tittle has been changed. Those principles that were made known to man in Paradise as the great law of life will exist unchanged in Paradise restored. When Eden shall bloom on earth again, God's law of love will be obeyed by all beneath the sun. MB 50.2"
"For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled."
The EGW passage explicitly references the concept of the law not changing 'one jot or tittle,' which is a direct allusion to Matthew 5:18. The EGW passage expands on the implications of this immutability.