Roma 11:6

11:6 And if it is by grace, it is no longer by works, otherwise grace would no longer be grace.

Roma 11:20

11:20 Granted! ¹  They were broken off because of their unbelief, but you stand by faith. Do not be arrogant, but fear!

¹ tn Grk “well!”, an adverb used to affirm a statement. It means “very well,” “you are correct.”