'Tower' in the Bible

Jehovah is my rock, and my fortress, and my deliverer; my God, my rock, in whom I will trust; my shield, and the horn of my salvation, my high tower.

For thou hast been a refuge for me, a strong tower from before the enemy.

But Jehovah will be my high tower; and my God the rock of my refuge.

My mercy and my fortress, my high tower and my deliverer, my shield and he in whom I trust, who subdueth my people under me!