"So great are the world's needs, that not all who are called to be medical missionary evangelists can afford to spend years in preparation before beginning to do actual field work. Soon doors now open to the gospel messenger will be forever closed. God calls upon many who are prepared to do acceptable service, to carry the message now, not waiting for further preparation; for while some delay, the enemy may take possession of fields now open. CT 469.1"
"I must work the works of him that sent me, while it is day: the night cometh, when no man can work."
Both passages emphasize the urgency of working while there is still opportunity, before it is too late. The EGW passage speaks of doors closing, while John 9:4 speaks of the night coming when no one can work.
"I have been instructed that little companies who have received a suitable training in evangelical and medical missionary lines should go forth to do the work to which Christ appointed His disciples. Let them labor as evangelists, scattering our publications, talking of the truth to those they meet, praying for the sick, and, if need be, treating them, not with drugs, but with nature's remedies, ever realizing their dependence on God. As they unite in the work of teaching and healing they will reap a rich harvest of souls. CT 469.2"
"And when he had called unto him his twelve disciples, he gave them power against unclean spirits, to cast them out, and to heal all manner of sickness and all manner of disease."
The EGW passage directly reflects the principle of Christ sending out his disciples to preach and heal, as described in Matthew 10:1. The emphasis on teaching and healing is present in both.
"Is any sick among you? let him call for the elders of the church; and let them pray over him, anointing him with oil in the name of the Lord:"
Both passages address the practice of praying for the sick. While James 5:14 mentions anointing with oil, the core idea of seeking healing through prayer is present in both passages, with the EGW passage mentioning praying for the sick.