"Forever cease your murmurings in regard to this poor life, but let your soul's burden be, how to secure the better life than this, a title to the mansions prepared for those who are true and faithful to the end. If you make a mistake here, everything is lost. If you devote your lifetime to securing earthly treasures, and lose the heavenly, you will find that you have made a terrible mistake. You cannot have both worlds. “What shall it profit a man, if he shall gain the whole world, and lose his own soul? Or what shall a man give in exchange for his soul?” Says the inspired Paul: “For our light affliction, which is but for a moment, worketh for us a far more exceeding and eternal weight of glory; while we look not at the things which are seen, but at the things which are not seen: for the things which are seen are temporal; but the things which are not seen are eternal.” 1T 706.1"
"For what is a man profited, if he shall gain the whole world, and lose his own soul? or what shall a man give in exchange for his soul?"
EGW directly quotes Matthew 16:26.
"These trials of life are God's workmen to remove the impurities, infirmities, and roughness from our characters, and fit us for the society of pure, heavenly angels in glory. But as we pass through these trials, as the fires of affliction kindle upon us, we must not keep the eye on the fire which is seen, but let the eye of faith fasten upon the things unseen, the eternal inheritance, the immortal life, the eternal weight of glory; and while we do this the fire will not consume us, but only remove the dross, and we shall come forth seven times purified, bearing the impress of the Divine. 1T 706.2"
"That the trial of your faith, being much more precious than of gold that perisheth, though it be tried with fire, might be found unto praise and honour and glory at the appearing of Jesus Christ:"
Both passages discuss trials by fire refining faith and character. EGW's passage clearly echoes the sentiment and imagery of 1 Peter 1:7, amplifying the idea of trials purifying like fire.
"While we look not at the things which are seen, but at the things which are not seen: for the things which are seen are temporal; but the things which are not seen are eternal."
EGW's emphasis on fixing the 'eye of faith' on 'things unseen' directly parallels 2 Corinthians 4:18, which contrasts the temporal seen with the eternal unseen. The connection is strong and supports the idea of focusing on eternal rewards during trials.
"Blessed is the man that endureth temptation: for when he is tried, he shall receive the crown of life, which the Lord hath promised to them that love him."
Both passages connect enduring trials with receiving a reward (crown of life/eternal inheritance). While the specific imagery differs, the underlying principle of perseverance leading to a divine reward is shared.