Matthew 5:21, 27, 33, 38
Matthew 5:21 ASV
Ye have heard that it was said to them of old time, Thou shalt not kill; and whosoever shall kill shall be in danger of the judgment
Matthew 5:33 ASV
Again, ye have heard that it was said to them of old time, Thou shalt not forswear thyself, but shalt perform unto the Lord thine oaths