2 Peter 1:5–7 (WEB)
In your faith supply moral excellence; and in moral excellence, knowledge; and in knowledge, self-control; and in self-control, perseverance; and in perseverance, godliness; and in godliness, brotherly affection; and in brotherly affection, love.
Character grows like fruit — one virtue building on another, rooted in faith and watered by the Spirit.