'Surely' in the Bible

There was no end of all the people, even of all them over whom he was: yet they that come after shall not rejoice in him. Surely this also is vanity and a striving after wind.

Surely extortion maketh the wise man foolish; and a bribe destroyeth the understanding.

Surely there is not a righteous man upon earth, that doeth good, and sinneth not.

Though a sinner do evil a hundred times, and prolong his days , yet surely I know that it shall be well with them that fear God, that fear before him: