"“O, what is there that will give them a consciousness of the responsibility resting on them to be Christ-like in word and act! I shall try to arouse their slumbering senses by writing, if not by speaking. The awful sense of my responsibility takes such possession of me that I am weighted as a cart beneath sheaves. I do not desire to feel less keenly my obligation to the Higher Power. That Presence is ever with me, asserting supreme authority and taking account of the service that I render or withhold.” Unpublished Letter, December 9, 1902 . LS 432.2"
"For though I preach the gospel, I have nothing to glory of: for necessity is laid upon me; yea, woe is unto me, if I preach not the gospel!"
Both passages express a sense of overwhelming responsibility and obligation to fulfill a divine calling. While the specific contexts differ (preaching the gospel vs. writing), the underlying theme of being burdened by a sense of duty is present in both.
"“The Lord commands me to speak, and this I shall do,” Mrs. White declared further when feeling thus burdened over her responsibility as a chosen messenger. ‘I have been instructed to bear my testimony with the decision of authority.” Unpublished Letter, December 7, 1902 . And in another communication, penned the same month, she wrote: LS 432.3"
"But the Lord said unto me, Say not, I am a child: for thou shalt go to all that I shall send thee, and whatsoever I command thee thou shalt speak."
Both passages involve a prophet being commanded by God to speak and deliver a message. The EGW passage directly echoes the sentiment of divine command and authoritative delivery found in Jeremiah 1:7.
"For we cannot but speak the things which we have seen and heard."
Both passages express a compulsion to speak about what one has experienced or been instructed to share. EGW's statement about being commanded to speak aligns with the sentiment in Acts 4:20, where the apostles declare they cannot help but speak about what they have seen and heard.
"“I have every reason to praise my heavenly Father for the clearness of thought that He has given me in regard to Bible subjects. I long to bring out these precious things, so that the minds of ministers and people may, if possible, be drawn away from contention and strife to something that is nourishing to the soul,—food that will give health, hopefulness, and courage.... LS 432.4"
"A man hath joy by the answer of his mouth: and a word spoken in due season, how good is it!"
Both passages deal with the positive impact of words, but the connection is somewhat general. The EGW passage focuses on the benefit of clear thought and nourishing content, while the proverb highlights the joy of timely and appropriate speech. The link is thematic, but not strong.