The Mosaic Law stated: “If a man makes a vow to Jehovah or swears an oath to impose on himself a vow . . . , he must not violate his word. He should do everything he vowed he would do.” (Num. 30:2) Later, Solomon was inspired to write the words of today’s text. Jesus confirmed the seriousness of making vows when he stated: “It was said to those of ancient times: ‘You must not swear without performing, but you must pay your vows to Jehovah.’” (Matt. 5:33) It is clear, then, that it is a very serious matter to make promises to God. The way we treat our vows affects our relationship with Jehovah. David wrote: “Who may ascend to the mountain of Jehovah, and who may stand up in his holy place? Anyone . . . who has not sworn a false oath by My [Jehovah’s] life, nor taken an oath deceitfully.”​—Ps. 24:3, 4; ftn. w17.04 4 ¶3-4