When this had dawned on him, he went to the house of Mary the mother of John, also called Mark, where many people had gathered and were praying.
NIV
When he, at a glance, became aware of this [comprehending all the elements of the case], he went to the house of Mary the mother of John, whose surname was Mark, where a large number were assembled together and were praying.
AMP
And when he had considered the thing, he came to the house of Mary the mother of John, whose surname was Mark; where many were gathered together praying.
KJV
Pray for us. We are sure that we have a clear conscience and desire to live honorably in every way.
NIV
Keep praying for us, for we are convinced that we have a good (clear) conscience, that we want to walk uprightly and live a noble life, acting honorably and in complete honesty in all things.
AMP
Pray for us: for we trust we have a good conscience, in all things willing to live honestly.
KJV