'Strengthen' in the Bible

And Jehovah saith unto Moses, 'In thy going to turn back to Egypt, see -- all the wonders which I have put in thy hand -- that thou hast done them before Pharaoh, and I -- I strengthen his heart, and he doth not send the people away;

And, now, send, strengthen thy cattle and all that thou hast in the field; every man and beast which is found in the field, and is not gathered into the house -- come down on them hath the hail, and they have died.'