"I do not frustrate the grace of God: for if righteousness come by the law, then Christ is dead in vain."
The EGW passage is a clear and direct allusion to the concept expressed in Galatians 2:21, that Christ's death would be meaningless if salvation could be achieved through other means.
"If you do not feel that it is an honor to be a partaker of the sufferings of Christ; if you feel no burden of soul for those who are ready to perish; if you are unwilling to sacrifice that you may save means for the work that is to be done, there will be no room for you in the kingdom of God. We need to be partakers with Christ of His sufferings and self-denial at every step. We need to have the Spirit of God resting upon us, leading us to constant self-sacrifice. 9T 103.3"
"That I may know him, and the power of his resurrection, and the fellowship of his sufferings, being made conformable unto his death;"
Both passages discuss the idea of sharing in Christ's sufferings. EGW's statement amplifies the concept found in Philippians 3:10, connecting it to practical self-sacrifice and burden for others.
"Then said Jesus unto his disciples, If any man will come after me, let him deny himself, and take up his cross, and follow me."
EGW's call to self-sacrifice directly reflects the principle Jesus taught in Matthew 16:24 about denying oneself and taking up one's cross to follow Him.
"And if children, then heirs; heirs of God, and joint-heirs with Christ; if so be that we suffer with him, that we may be also glorified together."
Both passages link suffering with Christ to a future glory or inheritance. EGW's statement echoes the sentiment of Romans 8:17, emphasizing the necessity of suffering with Christ.