Matthew 5:34
But I say to you, do not take any oath, [saying] 'by heaven,' for it is God's throne;
James 5:12
But above everything else, my brothers, do not take oaths, not "by the heaven," nor "by the earth," nor by any other oath. But your "yes" should be [simply] "yes," and your "no," [simply] "no," so you do not fall under condemnation.
Matthew 23:16-22
"It is too bad for you blind leaders who say that whoever takes an oath 'by the Temple,' it does not [really] mean anything, but whoever takes an oath 'by the gold of the Temple,' he is obligated to [fulfill] the oath.
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