'Continue' in the Bible

Then Jesus said to those Judeans who had believed him, "If you continue to follow my teaching, you are really my disciples

I made known your name to them, and I will continue to make it known, so that the love you have loved me with may be in them, and I may be in them."

Then he said to Thomas, "Put your finger here, and examine my hands. Extend your hand and put it into my side. Do not continue in your unbelief, but believe."