Romans 3:25
Sacrifice of atonement :NIV,NRSV, AMP, EXB
Atoning sacrifice : WEB, Mounce, Berean Study Bible
Old NIV foonote : "the one who would turn aside his wrath, taking away sin
Current NIV footnote : The Greek for sacrifice of atonement refers to the
atonement cover on the ark of the covenant (see Lev. 16:15,16).
The 1996 NLT had the following in the text : "For God sent Jesus to take the
punishment for our sins and to satisfy God's anger against us..."
I don't have access to my Modern Language Bible and Norlie New Testament,
but I think both had atoning sacrifice. If anyone here has either translation, they
may chime in.
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1 John 2:2
NIV, WEB, Berean Study Bible, ISV, NET, Weymouth, EXB, ISV, MEV, NRSV : atoning sacrifice
Again, the Norlie and MLB may also have atoning sacrifice.
There is nothing sacred about using "propitiation" as the only word that shall be used in these two passages. There are alternatives. I like the 1996 NLT's rendering best.