Strong's #2433: hilaskomai (pronounced hil-as'-kom-ahee)

middle voice from the same as 2436; to conciliate, i.e. (transitively) to atone for (sin), or (intransitively) be propitious:--be merciful, make reconciliation for.

Thayer's Greek Lexicon:

̔́

hilaskomai

1) to render one' s self, to appease, conciliate to one' s self

1a) to become propitious, be placated or appeased

1b) to be propitious, be gracious, be merciful

2) to expiate, make propitiation for

Part of Speech: verb

Relation: middle voice from the same as G2436

Citing in TDNT: 3:301, 362

Usage:

This word is used 2 times:

 

Luke 18:13: "breast, saying, God be merciful to me a sinner."
Hebrews 2:17: "high priest in things pertaining to God, to make reconciliation for the sins of the people."