i want the function of for loop to perform one by one when a key or mouse is pressed

<div id="text">Nature in the broadest sense is the physical world or universe</div>
let el = document.getElementById(text);
let eltext = el.innerText;
let final = eltext.split(" ");
let i;
for (i = 0; i < final.length; i++) {
 if (final[i] === "the") {
   final[i] = `<b>${final[i]}</b>`;
 }
let result = (final + " ").replace(/,/g, " ");
el.innerHTML = result;

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the result will be:
Nature in the broadest sense is the physical world or universe

what i want:
when any key is triggered for the first time:
Nature in the broadest sense is the physical world or universe

when any key is triggered for the second time:
Nature in the broadest sense is the physical world or universe

when any key is triggered for the third time again:
Nature in the broadest sense is the physical world or universe