'Protection' in the Bible

Then we left the Ahava River for Jerusalem on the twelfth day of the first month. Our God's protection was with us, and he delivered us from the enemy's power and from ambush along the way.

For we are slaves; yet our God has not abandoned us in our bondage, but has extended lovingkindness to us before the kings of Persia, to revive us to rebuild the house of our God, to repair the site of its ruins and to give us a wall [of protection] in Judah and Jerusalem.