G2901–κραταιόω–krataioō

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

ἐκραταιοῦτο ekrataiouto “he was strengthened”

and the child grew and was strengthened in spirit, being filled with wisdom, and the grace of God was upon him.

ἐκραταιοῦτο ekrataiouto “He was being strengthened”

Watch ye, stand in the faith; be men, be strong;

κραταιοῦσθε. krataiousthe “do be strong.”

that He may give to you, according to the riches of His glory, with might to be strengthened through His Spirit, in regard to the inner man,

κραταιωθῆναι krataiōthēnai “to be strengthened”