"***** Workers for Christ are never to think, much less to speak, of failure in their work. The Lord Jesus is our efficiency in all things; His Spirit is to be our inspiration; and as we place ourselves in His hands, to be channels of light, our means of doing good will never be exhausted. We may draw upon His fullness and receive of that grace which has no limit. 6T 467.5"
"And of his fulness have all we received, and grace for grace."
The EGW passage directly echoes the sentiment of John 1:16, speaking of drawing upon Christ's fullness and receiving grace. The connection is clear and intentional.