'Surely' in the Bible

there is no end to all the people, to all who were before them; also, the latter rejoice not in him. Surely this also is vanity and vexation of spirit.

Surely oppression maketh the wise mad, And a gift destroyeth the heart.

Though a sinner is doing evil a hundred times, and prolonging himself for it, surely also I know that there is good to those fearing God, who fear before Him.