Verses with the word surely in the New Testament (7 verses):

Matthew 26:73
And after a while came unto him they that stood by, and said to Peter, Surely thou also art one of them; for thy speech bewrayeth thee.

Mark 14:70
And he denied it again. And a little after, they that stood by said again to Peter, Surely thou art one of them: for thou art a Galilaean, and thy speech agreeth thereto.

Luke 1:1
Forasmuch as many have taken in hand to set forth in order a declaration of those things which are most surely believed among us,

Luke 4:23
And he said unto them, Ye will surely say unto me this proverb, Physician, heal thyself: whatsoever we have heard done in Capernaum, do also here in thy country.

John 17:8
For I have given unto them the words which thou gavest me; and they have received them, and have known surely that I came out from thee, and they have believed that thou didst send me.

Hebrews 6:14
Saying, Surely blessing I will bless thee, and multiplying I will multiply thee.

Revelation 22:20
He which testifieth these things saith, Surely I come quickly. Amen. Even so, come, Lord Jesus.