Matthew 5:34
But I tell you, you must not swear any oath, neither by heaven, for it is the throne of God,
James 5:12
Above all, my brothers, never swear an oath, either by heaven or by earth or by anything else; let your "yes" be a plain "yes," your "no" a plain "no," lest you incur judgment.
Matthew 23:16-22
Woe to you, blind guides that you are! you say, 'Swear by the sanctuary, and it means nothing; but swear by the gold of the sanctuary, and the oath is binding.'
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