Strong's G3872 — παρακαταθήκη (noun)
parakatatheke (par-ak-at-ath-ay'-kay) n.
1. something put down alongside, i.e. a deposit (sacred trust)
[from a compound of G3844 and G2698]
KJV: that (thing) which is committed (un-)to (trust) 
Root(s): G3844, G2698 
Hebrew root: κατατίθημι