Strong G3727 ὅρκος horkos · oath

Matthew

1. Matthew 5:33
   Again, ye have heard that it hath been said by them of old time, Thou shalt not forswear thyself, but shalt perform unto the Lord thine oaths:
2. Matthew 14:7
   Whereupon he promised with an oath to give her whatsoever she would ask.
3. Matthew 14:9
   And the king was sorry: nevertheless for the oath’s sake, and them which sat with him at meat, he commanded it to be given her.
4. Matthew 26:72
   And again he denied with an oath, I do not know the man.