'Ready' in the Bible

So Mephibosheth the son of Jonathan, the son of Saul, came to David. And he fell on his face and did obeisance. David said, "Mephibosheth," and he said, "{I am ready to serve you}."

Then the servants of the king said to the king, "According to all that my lord the king chooses, {your servants are ready to act}!"

But if he says, 'I take no pleasure in you,' then {I am ready}. Let him do to me that which [is] good in his eyes.