22, 23. Behold therefore the goodness and severity of God: on them that fell, severity—in rejecting the chosen seed.
but toward thee, goodness—"God's goodness" is the true reading, that is, His sovereign goodness in admitting thee to a covenant standing who before wert a "stranger to the covenants of promise" (Eph 2:12-20).
if thou continue in his goodness—in believing dependence on that pure goodness which made thee what thou art.