The Lord himself became the first-fruits of the resurrection of mankind, and when its time of punishment for disobedience is over, the rest of the body, to which the whole human race belongs, will rise from the grave as the head has done. By God’s aid it will grow and be strengthened in all its joints and ligaments, each member having its own proper place in the body. There are many rooms in the Father’s house because the body has many members.
God bore with man patiently when he fell because he foresaw the victory that would be his through the Word. Weakness allowed strength its full play, and so revealed God’s kindness and great power.
[St. Irenaeus of Lyons, Against Heresies]