January 6

To enter the Kingdom is easy, but to remain firm and constant is difficult. The planting of trees is easy, but their cultivation and training to strengthen their roots and to make them firm is difficult. Now, as thou art a firm tree, thou shalt certainly grow and send out branches, leaves and blossoms and bear fruits.

These branches, leaves, blossoms and fruits are the souls who may be guided, through the providence of God, by thee. Therefore, thou art confirmed and strengthened. 
- ‘Abdu’l-Baha  (‘Tablets of ‘Abdu’l-Baha, vol. 1)