In other words, that the person saying "I'll pray for you" is also saying under their breath, "...you moral retard."
It puzzles me, as I have always felt grateful if a person said they'd pray for me. Even a person of a different religion: I think, "Well, I don't believe as you do, but I know you mean well."
Am I wrong?
The Spiritual Works of Mercy are acts of compassion, as listed below, by which we help our neighbors with their emotional and spiritual needs.
I think it comes down to the individual's view of whether it is Biblically okay for a layperson to pray directly to God, or whether they instead believe there must be an "official" intercessor, such as a living member of a given priesthood or clergy, or a designated saint. Further, it depends on how active they are in prayer and seeking the Holy Spirit in their daily lives.
If a Christian individual follows the exhortations in James to have an active prayer life, and they pray daily without just moving their lips or repeating words they have memorized, but from their hearts with trust and intimacy, then they are more likely to accept any Christian prayers, Jewish prayers -- any that are, as you say, well intended. (I'm making an exception here for that religion that plays "gotcha" and will only pray for the other person to convert to their belief -- or else!)
In other words, that the person saying "I'll pray for you" is also saying under their breath, "...you moral retard."
It puzzles me, as I have always felt grateful if a person said they'd pray for me. Even a person of a different religion: I think, "Well, I don't believe as you do, but I know you mean well."
Am I wrong?
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NO, you are NOT wrong.
You are as right as rain.