la que no resbala o no falla
From LSJ
χελῶναι μακάριαι τοῦ δέρματος → you tortoises are fortunate in your skin, you blessed turtles with your shell
χελῶναι μακάριαι τοῦ δέρματος → you tortoises are fortunate in your skin, you blessed turtles with your shell