Word: surely in Ecclesiastes

There is no end of all the people, even of all that have been before them: they also that come after shall not rejoice in him. Surely this also is vanity and vexation of spirit.

Ecclesiastes 7:7

Surely oppression maketh a wise man mad; and a gift destroyeth the heart.

Ecclesiastes 8:12

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

Ecclesiastes 10:11

Surely the serpent will bite without enchantment; and a babbler is no better.