Dave is a lover of relics of the saints. He has some in his custody which he uses for public exposition and veneration of the faithful in Churches and other communities.
On July 2009, he made a research paper on "The Relics of the Saints in Liturgy," under the guidance of Rev. Fr. Timoteo Jose M. Ofrasio, SJ, SLD, and was presented to the Paul VI Institute of Liturgy in Malaybalay, Bukidnon. It was approved on July 16, 2009, by Rev. Fr. Anscar Chupungco, OSB, and presented the author the Certificate of Competency in Pastoral Liturgy.