Isaiah xxix, 13, which the Lord quotes in Matthew xv, 8: "This people
draweth nigh unto me with their mouth, but their heart is far from me.
But in vain do they worship me, teaching the doctrines and
commandments of men." [Isa. 29:13, Matt. 15:8]
Mark the word of Christ, Who calls it vain worship to serve God after
the doctrines of men. For Christ is not drunken or a fool; on His word
we must build in all things rather than on all angels and creatures
[Gal. 1:8].