If a soul swear, to wit, rashly, without consideration, either of God's law, or his own power or right, as David did, 1 Samuel 25:22. To do evil; either,
1. To himself, to wit, to punish himself, either in his body, or estate, or something else which is dear to him. Or rather,
2. To his neighbour, as 1 Samuel 25:22 Acts 23:12. Or to do good, to wit, to his neighbour, as Mark 6:23, when a man either may not or cannot do it, which may frequently happen. And it be hid from him, i.e. he did not know, or not consider, that what he swore to do, was or would be impossible or unlawful. When he knoweth of it; when he discovers it to be so, either by his own consideration, or by information from others. In one of these; either in the good or evil which he swore to do.