Affirm and Make sure

Affirm verb - To state as a fact usually forcefully.

Make sure and affirm are semantically related In some cases you can use "Make sure" instead a verb "Affirm".

Make sure verb - Make a point of doing something; act purposefully and intentionally.

Affirm and make sure are semantically related in pledge topic. Sometimes you can use "Affirm" instead a verb phrase "Make sure", if it concerns topics such as ratify.