Above all, my brothers, do not swear, not by heaven or earth or by any other oath. Simply let your “Yes” be yes, and your “No,” no, so that you will not fall under judgment.
Textus Receptus (TR) - James 5:12 >Πρὸ πάντων δέ, ἀδελφοί μου, μὴ ὀμνύετε, μήτε τὸν οὐρανόν, μήτε τὴν γῆν, μήτε ἄλλον τινὰ ὅρκον· ἤτω δὲ ὑμῶν τὸ ναί, ναί, καὶ τὸ οὔ, οὔ· ἵνα μὴ ὑπὸ κρίσιν πέσητε.