Arcana Coelestia # 417
417. Verse 21 And his brother's name was Jubal. He was the father of all who play upon the harp and organ.
'His brother's name was Jubal' means doctrine concerning the spiritual things of this same Church, and 'the father of all who play upon the harp and organ' the truths and goods of faith.
Romans 8:28
28
We know that all things work together for good for those who love God, to those who are called according to his purpose.