'Steadfast' in the Bible
For if the word spoken by the ministry of angels was steadfast and every rebellion and disobedience received a just recompense of reward,
For we are made partakers of Christ, if we hold the beginning of our confidence steadfast unto the end;
This hope we have as an anchor of the soul, a hope both sure and steadfast and one which enters within the veil,
For you have need of steadfast patience and endurance, so that you may perform and fully accomplish the will of God, and thus receive and carry away [and enjoy to the full] what is promised.