G1991–ἐπιστηρίζω–epistērizō

confirming the souls of the disciples, exhorting them to continue in the faith, and that through many tribulations we must enter into the kingdom of God.

ἐπιστηρίζοντες epistērizontes “strengthening”

And Judas and Silas, being themselves also prophets, exhorted the brethren with many words, and confirmed them.

ἐπεστήριξαν. epestērixan “strengthened [them].”

And he went through Syria and Cilicia, confirming the churches.

ἐπιστηρίζων epistērizōn “strengthening”

And having spent some time [ergänzt: there], he departed, and went through the region of Galatia, and Phrygia, in order, establishing all the disciples.

ἐπιστηρίζων epistērizōn “strengthening”