'Necessary' in the Bible

But if the ox had the habit of goring, and its owner was warned, and he did not take the necessary precautions, and then it killed a man or a woman, the ox must be stoned and the man must be put to death.

Or if it is known that the ox had the habit of goring, and its owner did not take the necessary precautions, he must surely pay ox for ox, and the dead animal will become his.

Abishai said to David, "Today God has delivered your enemy into your hands. Now let me drive the spear right through him into the ground with one swift jab! A second jab won't be necessary!"

And now, though we share the same flesh and blood as our fellow countrymen, and our children are just like their children, still we have found it necessary to subject our sons and daughters to slavery. Some of our daughters have been subjected to slavery, while we are powerless to help, since our fields and vineyards now belong to other people."

They are determined to be experts at doing evil; government officials and judges take bribes, prominent men make demands, and they all do what is necessary to satisfy them.