'Deadening' in the Bible

In view of this, I also do my best and strive always to have a clear conscience before God and before men.

and not being weak in faith, he considered not his own body already become dead, being about a hundred years old, and the deadening of Sarah's womb,

for if you are living according to the [impulses of the] flesh, you are going to die. But if [you are living] by the [power of the Holy] Spirit you are habitually putting to death the sinful deeds of the body, you will [really] live forever.