Indeed therefore Peter was kept in the prison, but fervent prayer was being made by the church to God for him.

This was a man who was instructed in the way of the Lord. And being fervent in the Spirit, he was speaking and teaching accurately the things about the Lord, knowing only the immersion of John.

not lazy in diligence, being fervent in the Spirit serving the Lord,

Fervent lips and a wicked heart are an earthen vessel overlaid with silver dross.

And above all having fervent love for yourselves, because love will cover a multitude of sins,