I have heard it pronounced "Say-lah" but the secular dictionary lists it as "See-Lah" and the Hebrew etymology (from the same Merriam Webster source) lists it as See-Lay.

So what is the most recognized pronunciation by the Church?

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--chRis
Psalm 115:1

Christopher Reeder
Husband to Kara, Father to Abigail (7), Caleb (6), Grace (4 1/2), Zoë (3), Elijah (1 1/2) and Hannah (born 8/8/2008)

Member: Pilgrim Presbyterian Church (OPC), Raleigh, NC