'Defending' in the Bible

Meanwhile, Jehoshaphat's son Jehu, the grandson of Nimshi, had been conspiring against Joram while Joram and all the army of Israel had been defending Ramoth-gilead against King Hazael from Aram.

As birds flying, so will the LORD of hosts defend Jerusalem; defending also he will deliver it; and passing over he will preserve it.

Then after the sixty-two weeks [of years] the Anointed One will be cut off [and denied His Messianic kingdom] and have nothing [and no one to defend Him], and the people of the [other] prince who is to come will destroy the city and the sanctuary. Its end will come with a flood; even to the end there will be war; desolations are determined.