"***** Chapter 36—Surety for Unbelievers I saw that God was displeased with His people for becoming surety for unbelievers. I was directed to these texts: Proverbs 22:26 : “Be not thou one of them that strike hands, or of them that are sureties for debts.” Proverbs 11:15 : “He that is surety for a stranger shall smart for it: and he that hateth suretyship is sure.” Unfaithful stewards! They pledge that which belongs to another,—their heavenly Father,—and Satan stands ready to aid his children to wrench it out of their hands. Sabbathkeepers should not be in partnership with unbelievers. God's people trust too much to the words of strangers, and ask their advice and counsel when they should not. The enemy makes them his agents, and works through them to perplex and take from God's people. 1T 200"
"Be not thou one of them that strike hands, or of them that are sureties for debts."
EGW directly quotes Proverbs 22:26 and applies it to the context of becoming surety for unbelievers.
"He that is surety for a stranger shall smart for it: and he that hateth suretiship is sure."
EGW directly quotes Proverbs 11:15 and applies it to the context of becoming surety for unbelievers.
"Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness?"
The EGW passage warns against being in partnership with unbelievers, which aligns with the principle of not being unequally yoked together with unbelievers in 2 Corinthians 6:14. Both passages emphasize the importance of maintaining spiritual separation from those who do not share the same beliefs.