98 Grk “praying, were singing.” The participle προσευχόμενοι (proseuchomenoi) has been translated as a finite verb due to requirements of contemporary English style.
99 Praying and singing hymns to God. Tertullian said, “The legs feel nothing in the stocks when the heart is in heaven” (To the Martyrs 2; cf. Rom 5:3; Jas 1:2; 1 Pet 5:6). The presence of God means the potential to be free (cf. v. 26).
100 The words “the rest of” are not in the Greek text, but are implied.

In other versions

About midnight Paul and Silas were praying and singing hymns to God, and the prisoners were listening to them,

About midnight Paul and Silas were praying and singing hymns to God, and the other prisoners were listening to them.

About midnight Paul and Silas were praying and singing hymns to God, and the prisoners were listening to them.

Around midnight Paul and Silas were praying and singing hymns to God, and the other prisoners were listening.

Now about midnight, Paul and Silas were praying and singing hymns to God, and the prisoners were listening to them.

And at midnight Paul and Silas prayed, and sang praises unto God: and the prisoners heard them.

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