G4732–στερεόω–stereoō

And he took him by the right hand, and raised him up: and immediately his feet and his ankle-bones received strength.

ἐστερεώθησαν estereōthēsan “were strengthened”

And by faith in his name hath his name made this man strong, whom ye behold and know: yea, the faith which is through him hath given him this perfect soundness in the presence of you all.

ἐστερέωσεν estereōsen “has strengthened”

So the churches were strengthened in the faith, and increased in number daily.

ἐστερεοῦντο estereounto “were strengthened”