Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why

abstruse

adjective

[L. abstrusus, from abstrudo, to thrust away, to conceal; abs and trudo; Eng. to thrust.]

Hid; concealed; hence, remote from apprehension; difficult to be comprehended or understood; opposed to what is obvious. Metaphysics is an abstruse science.