'Assured' in the Bible

and being fully assured that what God had promised, He was able also to perform.

And we know [with great confidence] that God [who is deeply concerned about us] causes all things to work together [as a plan] for good for those who love God, to those who are called according to His plan and purpose.

One man is assured that he may eat all things; but the weak eats herbs.

One doth judge one day above another, and another doth judge every day alike; let each in his own mind be fully assured.