"Do they well to be thus unbelieving? Jesus is their friend. All heaven is interested in their welfare, and their fear and repining grieve the Holy Spirit. Not because we see or feel that God hears us are we to believe. We are to trust His promises. When we come to Him in faith, we should believe that every petition enters into the heart of Christ. When we have asked for His blessing, we should believe that we receive it, and thank Him that we have it. Then we are to go about our duties, assured that the blessing will be sent when we need it most. When we have learned to do this, we shall know that our prayers are answered. God will do for us “exceeding abundantly,” “according to the riches of His glory,” and “the working of His mighty power.” [ Ephesians 3:20, 16, 19 .] GW 261.3"
"And grieve not the holy Spirit of God, whereby ye are sealed unto the day of redemption."
EGW directly references the concept of grieving the Holy Spirit, which is the core idea of Ephesians 4:30. The context in EGW also aligns with the idea of unbelief and its impact on the Spirit.
"Now faith is the substance of things hoped for, the evidence of things not seen."
Both passages emphasize the importance of faith and trust in God, even when the results are not immediately visible. The EGW quote focuses on believing that prayers are heard and answered, while Hebrews 11:1 defines faith as the substance of things hoped for, the evidence of things not seen. The EGW quote also reinforces this with the Ephesians verses.