how to merge setInterval and addEventListener functions

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Javascript

DOM

scrolling

, +

Hey there and compliments of the season. I'm trying to pop strings off an array into an element with id "firstPara" but only on scroll. I also want the strings to be popped on interval. Here's my code

var firstString = ["This ", "is ", " me."];
			var firstPara = document.querySelector("#firstPara");
			var distanceSoFar = (document.body.scrollTop);
			
			window.addEventListener("scroll", function (){
			setInterval(slideIn, 450);
			});
			
			function slideIn(){
			if (distanceSoFar > "130") {
			for (var i = 0; i < firstString.length; i++) {
			var stringOut = firstString.shift();
			firstPara.innerHTML += stringOut;
			}
			}};

It doesn't log any errors in the console and does not pop anything either.