ἐπιστηρίζω

Acts 14:22 Confirming the souls of the disciples, and exhorting them to continue in the faith, and that we must through much tribulation enter into the kingdom of God. Acts 15:32 And Judas and Silas, being prophets also themselves, exhorted the brethren with many words, and confirmed them. Acts 15:41 And he went through Syria and Cilicia, confirming the churches. Acts 18:23 And after he had spent some time there, he departed, and went over all the country of Galatia and Phrygia in order, strengthening all the disciples.