WHIPPANY Bishop Serratelli celebrated Mass and distributed First Holy Communion to 15 children at Our Lady of Mercy Church here during his pastoral visit to the parish May 9 at 2 p.m. The Mass was the second of two First Holy Communion celebrations at the Whippany parish. Its first celebration was held at 11 a.m. that day and families had a choice as to which Holy Communion to attend. In total 37 children received First Communion.