'Constant' in the Bible

and they were constant in listening to the teaching of the Apostles and in their attendance at the Communion, that is, the Breaking of the Bread, and at prayer.

When the angel who was speaking to him had left, he summoned two of his servants and a devout soldier of those who were his personal attendants,

Peter therefore was kept in the prison, but constant prayer was made by the assembly to God for him.