"Remember that Duty has a twin sister, Love; these united can accomplish almost everything, but separated, neither is capable of good. 4T 62.2"
"Though I speak with the tongues of men and of angels, and have not charity, I am become as sounding brass, or a tinkling cymbal. And though I have the gift of prophecy, and understand all mysteries, and all knowledge; and though I have all faith, so that I could remove mountains, and have not charity, I am nothing. And though I bestow all my goods to feed the poor, and though I give my body to be burned, and have not charity, it profiteth me nothing."
EGW's statement about Duty and Love echoes the sentiment in 1 Corinthians 13, which emphasizes the importance of love (charity) above all other gifts and actions. Without love, even the most impressive deeds are meaningless.
"It is right that you should both cherish integrity and be true to your sense of right. The straight path of duty should be yours from choice. The love of property, the love of pleasure and friendship, should never influence you to sacrifice one principle of right. You should be firm in following the dictates of an enlightened conscience, and your convictions of duty; but you should guard against bigotry and prejudice. Do not run into a pharisaical spirit. 4T 62.3"
"Ponder the path of thy feet, and let all thy ways be established."
Both passages discuss the importance of choosing the right path and establishing one's ways. However, the connection is somewhat general and could apply to many ethical teachings.