'Sure' in the Bible

For if the message given through angels [the Law given to Moses] was authentic and unalterable, and every violation and disobedient act received an appropriate penalty,

how shall *we* escape if we are indifferent to a salvation as great as that now offered to us? This, after having first of all been announced by the Lord Himself, had its truth made sure to us by those who heard Him,

For men indeed swear by a greater, and with them the oath is a term to all dispute, as making matters sure.

Which hope we have as an anchor of the soul, both sure and stedfast, and which entereth into that within the veil;

Let us seize and hold tightly the confession of our hope without wavering, for He who promised is reliable and trustworthy and faithful [to His word];

Now faith is being sure of what we hope for, being convinced of what we do not see.

Pray for us, for we are sure that we have a clear conscience and desire to live honorably in every way.