Of Prayers with Regard to the Saints in Heaven

We must now consider prayer with regard to the saints in heaven. Under this head there are three points of inquiry:(1) Whether the saints have knowledge of our prayers?(2) Whether we should beseech them to pray for us?(3) Whether the prayers they pour forth for us are always granted?

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Whether the saints have knowledge of our prayers?
Whether we ought to call upon the saints to pray for us?
Whether the prayers which the saints pour forth to God for us are always granted?