Romans 15:17

Whereof I may glory [τ η ν κ α υ χ η σ ι ν]. Rather, as Rev., my glorying, denoting the act. The ground of glorying would be kauchma as in ch. 4 2; Galatians 6:4, etc.

Those things which pertain to God [τ α π ρ ο ς τ ο ν θ ε ο ν]. A technical phrase in Jewish liturgical language to denote the functions of worship (Hebrews 2:17; Hebrews 5:1). According with the sacerdotal ideas of the previous verse.