'Fervently' in the Bible

And being in agony He was praying very fervently; and His sweat became like drops of blood, falling down upon the ground.

So Peter was kept in the prison, but prayer for him was being made fervently by the church to God.

Since you have in obedience to the truth purified your souls for a sincere love of the brethren, fervently love one another from the heart,