Concerned with the hact tht some modern versions like NLT intentionally have retranslated terms like Propiation/reconciliation/substitionary etc ...
"Propitiation" in the KJV appears just three times: one Greek word is
hilastērion (Strong's #2435) relating to an appeasing or expiating in Romans 3:25; the same Greek word is renedered "mercyseat" in Hebrews 9:5. Another Greek word is
hilasmos (Strong's #2434) meaning an appeasing is found in 1 John 2:2 & 4:10.
"Reconciliation" appears in the KJV just 8 times (5 OT, 3 NT). There are two different Hebrew words behind it: one Hebrew word is
kaphar (Strong's #3722) approximately meaning to cover over is found in the OT over 100 times, most of which are rendered "atonement" (71 times) but also by about a dozen other English words. The other Hebrew word is
chata' (STrong's #2398) indicating to miss the mark in 2 Chronicles 29:24 is found over 200 times, most of which are rendered "sin" (188 times) but also by more than a dozen other English words. There are two words underlying it in Greek: a noun
katallagē (Strong's # 2643) an exchange, and a verb
hilaskomai (Strong's # 2433) to conciliate to one's self. Furthermore, "reconcile" appears in the KJV text just 5 times (3 OT, 2 NT), "reconciled" 7 times (all NT), and "reconciling" only 3 times (1 OT, 2 NT). Probably the key NT verses are 2 Corinthians 5:18-20 --
And all things [are] of God, who hath reconciled us to himself by Jesus Christ, and hath given to us the ministry of reconciliation;
To wit, that God was in Christ, reconciling the world unto himself, not imputing their trespasses unto them; and hath committed unto us the word of reconciliation.
Now then we are ambassadors for Christ, as though God did beseech [you] by us: we pray [you] in Christ's stead, be ye reconciled to God.
"Substitutionary" doesn't occur in the KJV (nor "substitution", nor "substitute", nor "substituting").