'Lo' in the Bible

And Jehovah said to Moses, Lo, the days are near for thee to die; call Joshua, and present yourselves at the tent of meeting, that I may give him a charge. And Moses and Joshua went and presented themselves at the tent of meeting.

for I know thy rebellion, and thy stiff neck. Lo, while I am yet alive with you this day, ye have been rebellious against Jehovah; and how much more after my death!