'Strengthen' in the Bible

and I besought for thee, that thy faith may not fail; and thou, when thou didst turn, strengthen thy brethren.'

and the Lord stood by me, and did strengthen me, that through me the preaching might be fully assured, and all the nations might hear, and I was freed out of the mouth of a lion,

And the God of all grace, who did call you to His age-during glory in Christ Jesus, having suffered a little, Himself make you perfect, establish, strengthen, settle you;

become watching, and strengthen the rest of the things that are about to die, for I have not found thy works fulfilled before God.