'Convinced' in the Bible

and if you are convinced that you are a guide for the blind, a light to those in darkness,

because he was fully convinced that what He had promised He was also able to perform.

One person considers one day to be above another day. Someone else considers every day to be the same. Each one must be fully convinced in his own mind.

My brothers, I myself am convinced about you that you also are full of goodness, filled with all knowledge, and able to instruct one another.