G4732–στερεόω–stereoō

He took him by the right hand, and raised him up. Immediately his feet and his ankle bones received strength.

ἐστερεώθησαν estereōthēsan “were strengthened”

By faith in his name has his name made this man strong, whom you see and know. Yes, the faith which is through him has given him this perfect soundness in the presence of you all.

ἐστερέωσεν estereōsen “has strengthened”

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

ἐστερεοῦντο estereounto “were strengthened”