We have sworn unto them - Although the Israelites were deceived in this business, and the covenant was made on a certain supposition which was afterwards proved to have had no foundation in truth, and consequently the whole engagement on the part of the deceived was hereby vitiated and rendered null and void; yet, because the elders had eaten with them, offered a covenant sacrifice, and sworn by Jehovah, they did not consider themselves at liberty to break the terms of the agreement, as far as the lives of the Gibeonites were concerned. That their conduct in this respect was highly pleasing to God is evident from this, that Joshua is nowhere reprehended for making this covenant, and sparing the Gibeonites; and that Saul, who four hundred years after this thought himself and the Israelites loosed from this obligation, and in consequence oppressed and destroyed the Gibeonites, was punished for the breach of this treaty, being considered as the violator of a most solemn oath and covenant engagement. See 2 Samuel 21:2-9, and Ezekiel 17:18, Ezekiel 17:19. All these circumstances laid together, prove that the command to destroy the Canaanites was not so absolute as is generally supposed: and should be understood as rather referring to the destruction of the political existence of the Canaanitish nations, than to the destruction of their lives. See the notes on Deuteronomy 20:10, Deuteronomy 20:17.

We have

Joshua 9:20 This we will do to them; we will even let them live, lest wrath be on us, because of the oath which we swore to them.

Ecclesiastes 8:2 I counsel you to keep the king's commandment, and that in regard of the oath of God.

Ecclesiastes 9:2 All things come alike to all: there is one event to the righteous, and to the wicked; to the good and to the clean, and to the unclean...

Jeremiah 4:2 And you shall swear, The LORD lives, in truth, in judgment, and in righteousness; and the nations shall bless themselves in him...

Being Made Archbishop of Armagh, He Suffers Many Troubles. Peace Being Made, from Being Archbishop of Armagh He Becomes Bishop of Down.
[Sidenote: 1129] 19. (12). Meanwhile[365] it happened that Archbishop Cellach[366] fell sick: he it was who ordained Malachy deacon, presbyter and bishop: and knowing that he was dying he made a sort of testament[367] to the effect that Malachy ought to succeed him,[368] because none seemed worthier to be bishop of the first see. This he gave in charge to those who were present, this he commanded to the absent, this to the two kings of Munster[369] and to the magnates of the land he specially enjoined …
H. J. Lawlor—St. Bernard of Clairvaux's Life of St. Malachy of Armagh