Godly sorrow brings repentance that leads to salvation and leaves no regret, but worldly sorrow brings death.
NIV
For godly grief and the pain God is permitted to direct, produce a repentance that leads and contributes to salvation and deliverance from evil, and it never brings regret; but worldly grief (the hopeless sorrow that is characteristic of the pagan world) is deadly [breeding and ending in death].
AMP
For godly sorrow worketh repentance to salvation not to be repented of: but the sorrow of the world worketh death.
KJV
Do not run until your feet are bare and your throat is dry. But you said, 'It's no use! I love foreign gods, and I must go after them.'
NIV
[Cease from your mad running after idols, from which you get nothing but bitter injury.] Keep your feet from being unshod and your throat from thirst. But you said, It is hopeless! For I have loved strangers and foreigners, and after them I will go.
AMP
Withhold thy foot from being unshod, and thy throat from thirst: but thou saidst, There is no hope: no; for I have loved strangers, and after them will I go.
KJV
You wearied yourself by such going about, but you would not say, 'It is hopeless.' You found renewal of your strength, and so you did not faint.
NIV
You were wearied with the length of your way [in trying to find rest and satisfaction in alliances apart from the true God], yet you did not say, There is no result or profit. You found quickened strength; therefore you were not faint or heartsick [or penitent].
AMP
Thou art wearied in the greatness of thy way; yet saidst thou not, There is no hope: thou hast found the life of thine hand; therefore thou wast not grieved.
KJV