array, a ray, arrayed, a raid, arrays, a raise

Array or array means a group or arrangement of things or people, as troops in an army, literally or figuratively--
The people lined up to admire the array of troops and armaments.
He marshaled an array of of arguments, but she was not persuaded.

Array also means to group or arrange things in order, or to spread them out to be viewed--
He is trying to array his toy soldiers in realistic battle formation.
We have tried to array the food in order of popularity.

Array also means to deck out or costume with--
They are making flower necklaces to array themselves for the festival.
She feels a need to array herself in the latest fashion, no matter how bizarre.

A ray or a ray ( rhymes with array ) means one ( a ) beam of light, or a line or beam radiating as from a point--
A ray of light was shining through a crack in the wall.
A ray of sunshine is peeking through the clouds.

A ray may also be a kind of wide flat fish--
You can see a ray at the aquarium.
He caught a ray, but he threw it back.

Arrayed or arrayed is the past tense ( yesterday, or some time ago ) of "array", meaning to arrange in order--
The troops were arrayed according to rank and specialty.
The students will be arrayed according to height, so we'll be able to see them all.

A raid or a raid ( rhymes with arrayed ) means one ( a ) sudden attack--
They planned a raid for midnight, and had hours to wait.
Let's organize a raid on the refrigerator.

Arrays or arrays is the plural of "array", meaning a group or arrangement of persons or things--
The parade was made up of several arrays of soldiers and marines.
The arrays of goods in the shops overwhelmed the visitors at first.

Arrays or arrays is also the third person singular ( he, she, it ) form of "array", meaning to arrange in order--
He arrays his toys like the goods in a store.
Before starting a job, he arrays his tools as if for battle.

A raise or a raise ( rhymes with arrays ) means one ( a ) heightening or elevation ( with "a", the only common use would be an elevation of price or cost ), literally or figuratively--
The landlord says there will be a raise in the cost of heat.
He hoped the coffee and food would effect a raise in their spirits.

A raise also commonly  means an increase in salary--
He asked his boss for a raise.
We can't afford to move until one of us gets a raise.

Now that you know that, you can say--
"The array of spectators had gathered to watch a ray of sun beaming through the crack in the stone."
"He meant to array the stones so that a ray of sun would hit them each hour, like a sundial."
"They arrayed themselves in battle formation, in preparation for a raid on the enemy stronghold."
"The various arrays of food and drinks were not as welcome as a raise would have been."
"If he arrays his accomplishments in front of the boss, he may get a raise."

Note--"rays" is the plural of "ray"--
The rays of light glowed with the sunset.
The plural of "raise" is "raises"--
The company will not be giving any raises this year.
"Raises" is also the third person singular ( he, she, it ) form of "raise", meaning to heighten or elevate, grow or cultivate--
He raises corn in the backyard.