Book of Joshua:

9:3 And when the inhabitants of Gibeon heard what Joshua had done unto
Jericho and to Ai, 9:4 They did work wilily, and went and made as if
they had been ambassadors, and took old sacks upon their asses, and
wine bottles, old, and rent, and bound up; 9:5 And old shoes and
clouted upon their feet, and old garments upon them; and all the bread
of their provision was dry and mouldy.

9:6 And they went to Joshua unto the camp at Gilgal, and said unto
him, and to the men of Israel, We be come from a far country: now
therefore make ye a league with us.

9:7 And the men of Israel said unto the Hivites, Peradventure ye dwell
among us; and how shall we make a league with you?  9:8 And they said
unto Joshua, We are thy servants. And Joshua said unto them, Who are
ye? and from whence come ye?  9:9 And they said unto him, From a very
far country thy servants are come because of the name of the LORD thy
God: for we have heard the fame of him, and all that he did in Egypt,
9:10 And all that he did to the two kings of the Amorites, that were
beyond Jordan, to Sihon king of Heshbon, and to Og king of Bashan,
which was at Ashtaroth.

9:11 Wherefore our elders and all the inhabitants of our country spake
to us, saying, Take victuals with you for the journey, and go to meet
them, and say unto them, We are your servants: therefore now make ye a
league with us.

9:12 This our bread we took hot for our provision out of our houses on
the day we came forth to go unto you; but now, behold, it is dry, and
it is mouldy: 9:13 And these bottles of wine, which we filled, were
new; and, behold, they be rent: and these our garments and our shoes
are become old by reason of the very long journey.

9:14 And the men took of their victuals, and asked not counsel at the
mouth of the LORD.

9:15 And Joshua made peace with them, and made a league with them, to
let them live: and the princes of the congregation sware unto them.

9:16 And it came to pass at the end of three days after they had made
a league with them, that they heard that they were their neighbours,
and that they dwelt among them.

Lesson:  Don't assume the UFO "sky people" are really from outer space. They are more likely subterranean hybrids that live in caves under the earth and ocean!