'Surely' in the Bible

A second time he repeatedly denied it. Soon afterwards the bystanders again accused Peter, saying, "You are surely one of them, for you too are a Galilaean."

I protest, brethren, as surely as I glory over you--which I may justly do in Christ Jesus our Lord--that I die day by day.

an animal body is sown, a spiritual body is raised. As surely as there is an animal body, so there is also a spiritual body.

Be mindful, therefore, of the height from which you have fallen. Repent at once, and act as you did at first, or else I will surely come and remove your lampstand out of its place--unless you repent.

Her children too shall surely die; and all the Churches shall come to know that I am He who searches into men's inmost thoughts; and to each of you I will give a requital which shall be in accordance with what your conduct has been.