Doctrine & Covenants 103
We have here another reminder of the importance of 100% obedience. The early saints were "chastened for a little season" because they did not "hearken altogether" and keep the commandments they had received. We need to remember that Heavenly Father wants to bless us, but he can't when we're being disobedient.
"All victory and glory is brought to pass unto you through your diligence, faithfulness, and prayers of faith" (D&C 103:36).