Verses with the word affirm in the New Testament (3 verses):

Romans 3:8
And not rather, (as we be slanderously reported, and as some affirm that we say,) Let us do evil, that good may come? whose damnation is just.

1 Timothy 1:7
Desiring to be teachers of the law; understanding neither what they say, nor whereof they affirm.

Titus 3:8
This is a faithful saying, and these things I will that thou affirm constantly, that they which have believed in God might be careful to maintain good works. These things are good and profitable unto men.