A picture is worth a thousand words. A post without any image looks bland and uninteresting. That is why in every post we make, we make sure that we insert an image or two to make it look more interesting. And besides, images are just a search away right? If you’ve been searching in Google for images to put in your blog post, stop. You might be charged for copyright infringement for using an image without the owner’s consent.
An alternative would be to make one of your own, pay for those images, or look at it in free image hosting sites.
Here are some sites where you can get royalty free images to put in your blog: http://www.wpbeginner.com/beginners-guide/how-to-find-royalty-free-images-for-your-wordpress-blog-posts/