G1476–ἑδραῖος–hedraios

Nevertheless, he that standeth steadfast in his heart, having no necessity, but hath power over his own will, and hath so decreed in his heart that he will keep his virgin, doeth well.

ἑδραῖος hedraios “firm”

Therefore, my beloved brethren, be ye steadfast, immovable, always abounding in the work of the Lord, forasmuch as ye know that your labor is not in vain in the Lord.

ἑδραῖοι hedraioi “steadfast”

If ye continue in the faith grounded and settled, and are not moved away from the hope of the gospel, which ye have heard, and which hath been preached to every creature which is under heaven; of which I Paul am made a minister;

ἑδραῖοι hedraioi “firm”