'Affirm' in the Bible

and why not (as we are slanderously reported, and as some affirm that we say), Let us do evil, that good may come? whose condemnation is just.

desiring to be teachers of the law, though they understand neither what they say, nor whereof they confidently affirm.

Faithful is the saying, and concerning these things I desire that thou affirm confidently, to the end that they who have believed God may be careful to maintain good works. These things are good and profitable unto men: