“secure.” The Hebrew word is sagab (#07682 שָׂגַב), and it literally means “to be lifted up,” to be high, to be inaccessibly high, and in some contexts (but not here) “to be exalted.” The word picture being drawn in this verse is that the name of Yahweh is a strong tower and those that run to it are high above the spears and arrows of the enemy and are safe and secure.