Answer: The sinfulness of man, and his distance from God by reason thereof, being so great, as that we can have no access into his presence without a mediator₁; and there being none in heaven or earth appointed to, or fit for, that glorious work but Christ alone₂, we are to pray in no other name but his only₃.

1. John 14:6; Isa 59:2; Eph 3:12
2. John 6:27; Heb 7:25-27; 1 Tim 2:5
3. Col 3:17; Heb 13:15