Heap (to) - Vine's Expository Dictionary of New Testament Words
Heap (to)[ 1,,G4987, soreuo ]
to heap one thing on another," is said "heaping" coals of fire on the head, Romans 12:20 (for the meaning See COALS); in 2 Timothy 3:6 it is used metaphorically of women "laden" (or overwhelmed) with sins. See LADEN. In the Sept. Proverbs 25:22.
[ 2,,G2002, episoreuo ]
"to heap upon" or "together" (epi, "upon," and No. 1), is used metaphorically in 2 Timothy 4:3 of appropriating a number of teachers to suit the liking of those who do so. The reference may be to those who, like the Athenians, run about to hear and follow those who proclaim new ideas of their own invention.