'Surely' in the Bible

When you sit to eat with a ruler, you shall surely observe what [is] before you,

{Surely} there is a future, and your hope will not be cut off.

The father of the righteous will surely rejoice; he who bears a wise person will be happy with him.

You will surely know the {condition} of your flock; your heart attends to the herds.

Who has ascended [to] heaven and come down? Who has gathered [the] wind in the hollow of his hand? Who has wrapped water in a garment? Who has established all the ends of the earth? What [is] his name and what is the name of his child? For [surely] you know.