A ground is an argument or reason for another statement. One way to remember this is that the ground is the base upon which another statement is built.
The supporting (or grounding) statement comes after the statement it supports. When you come to a grounding statement in the Bible, ask what came before it that it supports.
Jesus loves me this I know, for the Bible tells me so. How do we know that Jesus loves us? For (or because) the Bible tells us so.
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