"God's chosen messengers, who are engaged in aggressive labor, should never be compelled to go a warfare at their own charges, unaided by the sympathetic and hearty support of their brethren. It is the part of church members to deal liberally with those who lay aside their secular employment that they may give themselves to the ministry. When God's ministers are encouraged, His cause is greatly advanced. But when, through the selfishness of men, their rightful support is withheld, their hands are weakened, and often their usefulness is seriously crippled. AA 340.1"
"Even so hath the Lord ordained that they which preach the gospel should live of the gospel."
Both passages address the principle that those who preach the gospel should be supported by it. EGW expands on the practical implications of this principle.
"Let him that is taught in the word communicate unto him that teacheth in all good things."
Both passages discuss the financial support of those who teach/minister. Galatians 6:6 speaks of sharing 'all good things' with the teacher, which includes material support. EGW applies this to ministers.
"The displeasure of God is kindled against those who claim to be His followers, yet allow consecrated workers to suffer for the necessities of life while engaged in active ministry. These selfish ones will be called to render an account, not only for the misuse of their Lord's money, but for the depression and heartache which their course has brought upon His faithful servants. Those who are called to the work of the ministry, and at the call of duty give up all to engage in God's service, should receive for their self-sacrificing efforts wages sufficient to support themselves and their families. AA 340.2"
"And I will come near to you to judgment; and I will be a swift witness against the sorcerers, and against the adulterers, and against false swearers, and against those that oppress the hireling in his wages, the widow, and the fatherless, and that turn aside the stranger from his right, and fear not me, saith the Lord of hosts."
Both passages condemn those who withhold just wages from workers. Malachi 3:5 lists oppressing the hireling as a sin that will be judged. EGW applies this to those who fail to support ministers.
"Behold, the hire of the labourers who have reaped down your fields, which is of you kept back by fraud, crieth: and the cries of them which have reaped are entered into the ears of the Lord of sabaoth."
Both passages address the injustice of withholding wages from laborers. James 5:4 speaks of the cries of the laborers reaching God's ears. EGW applies this to ministers who are not adequately supported.