G2901–κραταιόω–krataioō

And the child grew, and waxed strong in spirit, and was in the deserts till the day of his shewing unto Israel.

ἐκραταιοῦτο ekrataiouto “he was strengthened”

And the child grew, and waxed strong in spirit, filled with wisdom: and the grace of God was upon him.

ἐκραταιοῦτο ekrataiouto “He was being strengthened”

Watch ye, stand fast in the faith, quit you like men, be strong.

κραταιοῦσθε. krataiousthe “do be strong.”

That he would grant you, according to the riches of his glory, to be strengthened with might by his Spirit in the inner man;

κραταιωθῆναι krataiōthēnai “to be strengthened”