Bible Verses About Witness: Required to cast the first stone in executing sentence

but thou shalt surely kill him; thy hand shall be first upon him to put him to death, and afterwards the hand of all the people.

then shalt thou bring forth that man or that woman, who hath done this evil thing, unto thy gates, even the man or the woman; and thou shalt stone them to death with stones.

At the mouth of two witnesses, or three witnesses, shall he that is to die be put to death; at the mouth of one witness he shall not be put to death.

The hand of the witnesses shall be first upon him to put him to death, and afterward the hand of all the people. So thou shalt put away the evil from the midst of thee.

and they cast him out of the city, and stoned him: and the witnesses laid down their garments at the feet of a young man named Saul.