G4732–στερεόω–stereoō

And having seized him by the right hand, he raised `him' up, and presently his feet and ankles were strengthened,

ἐστερεώθησαν estereōthēsan “were strengthened”

and on the faith of his name, this one whom ye see and have known, his name made strong, even the faith that `is' through him did give to him this perfect soundness before you all.

ἐστερέωσεν estereōsen “has strengthened”

then, indeed, were the assemblies established in the faith, and were abounding in number every day;

ἐστερεοῦντο estereounto “were strengthened”