C. F. Keil and Franz Delitzsch on Proverbs 18:10

Pro 18:10

Two proverbs, of the fortress of faith, and of the fortress of presumption: 10 A strong tower is the name of Jahve;      The righteous runneth into it, and is high.

The name of Jahve is the Revelation of God, and the God of Revelation Himself, the creative and historical Revelation, and who is always continually revealing Himself; His name is His nature representing itself, and therefore capable of being described and named, before all the Tetragramm, as the Anagramm of the overruling and inworking historical being of God, as the Chiffre of His free and all-powerful government in grace and truth, as the self-naming of God the Saviour. This name, which is afterwards interwoven in the name Jesus, is מגדּל־עז (Psa 61:4), a strong high tower bidding defiance to every hostile assault. Into this the righteous runneth, to hide himself behind its walls, and is thus lifted (perf. consec.) high above all danger (cf. ישׂגּב, Pro 29:25). רוּץ אל means, Job 15:26, to run against anything, רוץ, seq. acc., to invest, blockade anything, רוץ בּ, to hasten within; Hitzig’s conjecture, ירוּם riseth up high, instead of ירוּץ, is a freak. רוץ בּ is speedily בוא בּ, the idea the same as Psa 27:5; Psa 31:21.