One main reason why Catholics have the corpus hanging on the Cross is that we must never forget what He did for us. And that it's not so much the cross that did that, but rather Him hanging on that cross that accomplished our salvation.
One Sad But Holy Day
But far be it from me to glory except in the cross of our Lord Jesus Christ
- Galatians 6:14 RSV
The world does not understand this, Lord,
why I should want to bring to mind that sad but holy day,
when You became the curse for us,
when You carried that horrendous burden
far heavier than the wood of Your cross,
the sin of the world on Your sinless, torn and battered back.
Such is the scandal of God in the eyes of the world,
That out of disgrace and misery and pain,
Hope is born.
How heavy the weight of the unrighteousness of others on You,
the Son of righteousness,
hatred and the selfish lack of love piled high on You,
You who are all love,
all that darkness
on the shoulders of You who are always the Light,
as You brought the redemption that a loving God offered —
by Your stripes we are healed.
O Lord, let me think of the crowd that gathered in front of the Roman judge,
pressing close and noisy that Friday morning,
thinking they were upholding the honor of the Father,
but caught up by the world who would not see You for who you are,
and know my sins were there as they screamed for Your blood.
Let me think of the whip and know that my sins were there,
driving the lead tipped leather to cut Your skin,
as You took the punishment that I deserved.
Let me remember how that my sinful hand joined the executioner hammering the nails
through all the times I have chosen to do wrong,
not counting the cost that you so willingly bore to the depths of death.
The world does not understand,
does not want to understand,
chooses not to believe this foolishness of God,
the one thing truly to glory in,
a cursed death that is a marvelous victory,
yet for us who love You,
the scandal of the cross is our one hope and salvation.
Let me never take for granted what You have wrought,
and contemplating that day with remorse and with gladness,
remember with a thankful heart how much I am loved,
now and forever.