And he saith unto him, Verily, verily, I say unto you, Ye shall see the heaven opened, and the angels of God ascending and descending upon the Son of man.
Strong's Concordance
Original word: ἱλάσκομαι
Transliteration: hilaskomai
Definition (short): propitiation
Definition (full): to be propitious, make propitiation for
Middle voice from the same as hileos; to conciliate, i.e. (transitively) to atone for (sin), or (intransitively) be propitious -- be merciful, make reconciliation for.
KJV: And the publican, standing afar off, would not lift up so much as his eyes unto heaven, but smote upon his breast, saying, God be merciful to me a sinner.
NASB: "But the tax collector, standing some distance away, was even unwilling to lift up his eyes to heaven, but was beating his breast, saying, 'God, be merciful to me, the sinner!'
KJV: Wherefore in all things it behoved him to be made like unto his brethren, that he might be a merciful and faithful high priest in things pertaining to God, to make reconciliation for the sins of the people.
NASB: Therefore, He had to be made like His brethren in all things, so that He might become a merciful and faithful high priest in things pertaining to God, to make propitiation for the sins of the people.