'Fervently' in the Bible

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

Now at the time when Silas and Timothy came down from Macedonia, Paul was preaching fervently and was solemnly telling the Jews that Jesus is the Christ.

And they began to weep openly and threw their arms around Paul’s neck, and repeatedly kissed him,

Which hope [of the Messiah and the resurrection] our twelve tribes [confidently] expect to realize as they serve and worship God in earnest night and day. And for this hope, O King, I am being accused by Jews!