Verses with the word seventy in the New Testament (3 verses):

Matthew 18:22
Jesus saith unto him, I say not unto thee, Until seven times: but, Until seventy times seven.

Luke 10:1
After these things the LORD appointed other seventy also, and sent them two and two before his face into every city and place, whither he himself would come.

Luke 10:17
And the seventy returned again with joy, saying, Lord, even the devils are subject unto us through thy name.