'Strengthen' in the Bible

and so we sent Timothy, our brother and God’s servant in [spreading] the good news of Christ, to strengthen and encourage you [exhorting, comforting, and establishing you] in regard to your faith,

so that He may strengthen and establish your hearts without blame in holiness in the sight of our God and Father at the coming of our Lord Jesus with all His saints (God’s people).

Therefore encourage and comfort one another and build up one another, just as you are doing.