Compara traducciones versículo por versículo
See then that God is good but his rules are fixed: to those who were put away he was hard, but to you he has been good, on the condition that you keep in his mercy; if not, you will be cut off as they were.
Mira, pues, la bondad y la severidad de Dios: la severidad ciertamente en los que cayeron; mas la bondad para contigo, si permanecieres en la bondad; pues de otra manera tú también serás cortado.
Behold therefore the goodness and severity of God: on them which fell, severity; but toward thee, goodness, if thou continue in his goodness: otherwise thou also shalt be cut off.
See then the goodness and severity of God. Toward those who fell, severity; but toward you, goodness, if you continue in his goodness; otherwise you also will be cut off.