Boast not against the branches. But if thou boast, thou bearest not the root, but the root thee.
μὴ κατακαυχῶ τῶν κλάδων· εἰ δὲ κατακαυχᾶσαι, οὐ σὺ τὴν ῥίζαν βαστάζεις, ἀλλ᾿ ἡ ῥίζα σέ.