functions.php

<?php

add_action( 'genesis_before_content', 'sc_tag_message' );
  function sc_tag_message() {
		if ( is_tag() ) {
			$current_tag = single_tag_title("", false);
			$message = '<div class="tag-message">';
			$message .= '<h3> Please click on the blog on '. $current_tag .' below</h3>';
			$message .= '</div>';
		echo $message;
		}
	}