"Those who are co-workers with Christ, partakers with Him of His self-denial and His sacrifice, may be instrumental in bringing souls to Christ, and may see them saved, eternally saved, to praise God, and the Lamb who hath redeemed them. 2T 686.2"
"For we are labourers together with God: ye are God’s husbandry, ye are God’s building."
The EGW passage speaks of being co-workers with Christ, which aligns with the idea presented in 1 Corinthians 3:9 of being laborers together with God. While not a direct quote, the concept is very similar and supports the idea of working alongside God in His mission.