Heidelberg Catechism, 44., 45., 46.
44. Q. Why is there added: He descended into hell?
A. In my greatest sorrows and temptations I may be assured and comforted that my Lord Jesus Christ, by His unspeakable anguish, pain, terror, and agony, which He endured throughout all His sufferings[1] but especially on the cross, has delivered me from the anguish and torment of hell.[2]
[1] Ps. 18:5, 6; 116:3; Matt. 26:36-46; 27:45, 46; Heb. 5:7-10. [2] Is. 53.
45. Q. How does Christ’s resurrection benefit us?
A. First, by His resurrection He has overcome death, so that He could make us share in the righteousness which He had obtained for us by His death.[1] Second, by His power we too are raised up to a new life.[2] Third, Christ’s resurrection is to us a sure pledge of our glorious resurrection.[3]
[1] Rom. 4:25; I Cor. 15:16-20; I Pet. 1:3-5. [2] Rom. 6:5-11; Eph. 2:4-6; Col. 3:1-4. [3] Rom. 8:11; I Cor. 15:12-23; Phil. 3:20, 21.
46. Q. What do you confess when you say, He ascended into heaven?
A. That Christ, before the eyes of His disciples, was taken up from the earth into heaven,[1] and that He is there for our benefit[2] until He comes again to judge the living and the dead.[3]
[1] Mark 16:19; Luke 24:50, 51; Acts 1:9-11. [2] Rom. 8:34; Heb. 4:14; 7:23-25; 9:24. [3] Matt. 24:30; Acts 1:11.