He, as a human, had to die. But that alone was not enough. Christ had to suffer our hell for us. This is where the real suffering came in. Humans suffer excruciating pain, but humans cannot suffer an eternity in hell and come out of it.
Eternity is what it says.
No one can suffer an eternity in hell and spent that same eternity in heaven but God Himself. Christ had to conquer death so we could be resurrected. Remember, death is cast into the lake of fire for eternity. I believe it is wrong for churches to accentuate Christ's physical pain alone . That alone is not what saves us.