on Intercession of the Saints

Hermas Shepherd of Hermas book 3 similitude 5.4 (60-120 ad)
[The Shepherd said:] "But those who are weak and slothful in prayer hesitate to ask anything from the Lord, but the Lord is full of compassion, and gives without fail to all who ask him. But you, [Hermas,] having been strengthened by the holy angel [you saw], and having obtained from him such intercession, and not being slothful, why do not you ask of the Lord understanding, and receive it from him?"