'Pray' in the Bible

For thou, my God, hast revealed to thy servant that thou wilt build him a house; therefore hath thy servant found in his heart to pray before thee.

And David said to Gad, I am in a great strait: let me fall, I pray thee, into the hand of Jehovah, for his mercies are very great; but let me not fall into the hand of man.

And David said to God, Is it not I that commanded the people to be numbered? It is I that have sinned and done evil; but these sheep, what have they done? Let thy hand, I pray thee, Jehovah my God, be on me and on my father's house; but not on thy people, that they should be smitten.