"In the valley of humiliation, where men depend on God to teach them and to guide their every step, there is comparative safety. But the men who stand, as it were, on a lofty pinnacle, and who, because of their position, are supposed to possess great wisdom—these are in gravest peril. Unless such men make God their dependence, they will surely fall. PK 60.1"
"Wherefore let him that thinketh he standeth take heed lest he fall."
The EGW passage echoes the warning in 1 Corinthians 10:12 about overconfidence and the potential for falling. The 'lofty pinnacle' imagery reinforces the idea of a perceived secure position.
"A man’s pride shall bring him low: but honour shall uphold the humble in spirit."
Both passages contrast pride and humility, with pride leading to a fall and humility to safety/honor. The connection is more than just a vague overlap.
"Whenever pride and ambition are indulged, the life is marred, for pride, feeling no need, closes the heart against the infinite blessings of Heaven. He who makes self-glorification his aim will find himself destitute of the grace of God, through whose efficiency the truest riches and the most satisfying joys are won. But he who gives all and does all for Christ will know the fulfillment of the promise, “The blessing of the Lord, it maketh rich, and He addeth no sorrow with it.” Proverbs 10:22 . With the gentle touch of grace the Saviour banishes from the soul unrest and unholy ambition, changing enmity to love and unbelief to confidence. When He speaks to the soul, saying, “Follow Me,” the spell of the world's enchantment is broken. At the sound of His voice the spirit of greed and ambition flees from the heart, and men arise, emancipated, to follow Him. PK 60.2"
"The blessing of the Lord, it maketh rich, and he addeth no sorrow with it."
The EGW passage directly quotes Proverbs 10:22: “The blessing of the Lord, it maketh rich, and He addeth no sorrow with it.”
"But he giveth more grace. Wherefore he saith, God resisteth the proud, but giveth grace unto the humble."
Both passages discuss pride and humility in relation to God's grace. James 4:6 states God resists the proud and gives grace to the humble, while the EGW passage discusses how pride closes the heart to God's blessings and how giving all to Christ leads to fulfillment. The connection is thematic rather than a direct quote or allusion.