Though Jesus was God’s Son, yet He learned obedience by the things which He suffered. And having been perfected, He became the author of eternal salvation to all who obey Him.
Though He was the Son of God, He learned obedience. He had experience of it when He was obedient to death on the cross. Being the Son of God didn’t exempt Him from suffering. Jesus shared our humanity when He died on the cross. Finishing His sacrifice, He became the author of eternal salvation through all whom believe on Him.