The name of the Lord is a fortified tower; the righteous run to it and are safe.-Proverbs 18:10
The image Solomon is giving us here is that God is our castle keep. Picture any old or ancient fortification and what do you see. You see an outer wall surrounding buildings, but in the middle of all of these other buildings there is a lone tower surrounded by a second wall. This tower was the fortification’s last line of defense. It was the place where the fortifications defenders could fall back to if the outer wall was breached. It was a place of safety and security during an attack. That is God is for you. He is your inner tower. He is your keep, to use a term from European castle building. When you are under attack God is who you should be running to, because he is the one who will provide you with safety and security.