5338   holiday
     5864   futility
     7429   Sabbath, in OT

Isaiah 1:10-17

     5926   rebuke

Isaiah 1:10-18

     8618   prayerfulness

Isaiah 1:11-13

     7316   blood, OT sacrifices
     8460   pleasing God

Isaiah 1:11-15

     6109   alienation
     7322   burnt offering
     8784   nominal religion

Isaiah 1:11-17

     5381   law, letter and spirit
     5943   self-deception
     7328   ceremonies
     8628   worship, hindrances

Isaiah 1:13-14

     7398   New Moon festival

Isaiah 1:13-15

     8245   ethics, incentives