"souls would have been gathered in as the fruit of the seed sown at the meetings. 6T 75.1"
"And he that reapeth receiveth wages, and gathereth fruit unto life eternal: that both he that soweth and he that reapeth may rejoice together."
Both passages use the metaphor of sowing and reaping to describe evangelistic efforts. The connection is thematic and related to the idea of gathering souls.
"Let the workers become acquainted with the people and read to them the precious words of Christ. Lift up Jesus crucified among them, and soon those who have listened to the messages of warning from the ministers at the tent, and have been convicted, will be drawn out to ask for further information. This is the time to present the reasons of our faith with meekness and fear; not a slavish fear, but a cautious fear lest we speak unadvisedly. Present the truth in all its loveliness, in simplicity and sincerity, giving meat in due season, and to everyone his portion of meat. 6T 75.2"
"But sanctify the Lord God in your hearts: and be ready always to give an answer to every man that asketh you a reason of the hope that is in you with meekness and fear:"
EGW's instruction to present the reasons for faith with meekness and fear is a clear echo of 1 Peter 3:15. The connection is strong and the language is similar.
"This work requires you to watch for souls as they that must give an account. The tenderness of Christ must pervade the heart of the worker. If you have a love for souls you will reveal a tender solicitude for them. You will offer humble, earnest, heartfelt prayers for those whom you visit. The fragrance of Christ's love will be revealed in your work. He who gave His own life for the life of the world will co-operate with the unselfish worker to make an impression upon human hearts. 6T 75.3"
"Obey them that have the rule over you, and submit yourselves: for they watch for your souls, as they that must give account, that they may do it with joy, and not with grief: for that is unprofitable for you."
The phrase "watch for souls as they that must give an account" is a direct quote from Hebrews 13:17.