Albert Barnes Commentary John 8:29

"And he that sent me is with me; he hath not left me alone; for I do always the things that are pleasing to him." — John 8:29 (ASV)

Is with me. This means God was with him in working miracles, and so on.

Hath not left me alone. Though men had forsaken and rejected him, yet God remained with him.

Those things that please him. See Matthew 3:17: This is my beloved Son, in whom I am well pleased,Philippians 2:8; Isaiah 53:10–12; 2 Peter 1:17; Luke 3:22; Matthew 17:5.

His undertaking the work of redemption was pleasing to God, and he had the consciousness that in executing it he did those things which God approved. It is a small matter to have men opposed to us, if we have a conscience void of offense, and evidence that we please God.

Compare to Hebrews 11:5: Enoch—before his translation had this testimony that he pleased God. See also 1 Corinthians 4:3.