And Abraham planted a grove in Beersheba, and called there on the name of the LORD, the everlasting God.
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George Leo Haydock
A grove: in the midst of which was an altar, dedicated to the Lord God eternal; to testify that he alone was incapable of change. Thither Abraham frequently repaired, to thank God for all his favours. Temples were not probably as yet known in any part of the world. The ancient saints, Abraham, Isaac, Josue, were pleased to show their respect for God, and their love of retirement, by planting groves, and consecrating altars to the supreme Deity. If this laudable custom was afterwards perverted by the idolaters, and hence forbidden to God's people, we need not wonder. The best things may be abused; and when they become a source of scandal, we must avoid them. (Haydock)
(Josue xxix. 26; Judges vi. 25.)