Did you know that atheists are using this Psalm 137:9 verse, to discredit God, and set up stumbling blocks for our children and those who are infants, in the faith?
Unfortunately, I have ran across this one, many times. What disturbs me, even more, is that typical Christian response, to it. Most Christians will say that you got to read it, in context. Well, that's true, if the above verse wa...s even in the original scriptures, but it's not.
If you use the tools, concordances, Greek and Hebrew dictionaries, etc., which are easily available, to all who wish to search the true scriptures, for themselves, you will find that Psalm 137:9 actually says, "Blessed is he who will seize and destroy your children's refuge or security."
In context, with the preceding verses, of Psalm 137, it is clearly talking about God giving a blessing to those who will fight to defeat and destroy the foundations of Babylon, not God condoning smashing children against the rocks.
God is calling you to get back to your roots and arm yourselves, with the truth, within God's Word, not tradition interpretations.
... and that's what you'll find, When You Search For The Truth.