'Stand Fast' in the Bible

GOD is, not a man, that he should lie, Nor a son of Adam, that he should repent, - Hath, he, said, and will not perform? Yea spoken, and will not make it stand fast?

With her freedom, Christ hath made you, free. Stand fast, therefore, and do not, again, with a yoke of servitude, be held fast!

So then, my brethren, beloved and longed for, my joy and crown, - thus, stand fast in the Lord, beloved.

Because, now, we live, - if only, ye, stand fast in the Lord.