The topics you mentioned could be biblical if they are based on scripture or teachings from the Bible. Whether they help us grow in the grace of the Lord depends on how they align with biblical principles and how they are applied in our lives. Engaging with biblical topics often encourages spiritual growth, deeper understanding of God's word, and a closer relationship with Him. If these topics prompt reflection, prayer, and action in accordance with biblical teachings, they can indeed contribute to growing in the grace of the Lord.