Select single web element using xpath

@“Vinh Nguyen” so if I use xpath //span[text()="blablabla"]it should return array or list of web elements? since it matches more that 1. And I want to select specific element from array or list. Generally you can do like //span[text()="blablabla"][1] which will return element at index 1 from array of web elements.
But here is doesn’t seem to return single element.
Finding web element with id: 'Object Repository/test/test_object' located by 'By.xpath: //span[text()="blablabla"][1]' in '5' second(s) 09-20-2017 09:01:57 AM - [INFO] - **Found 3 web elements** with id: 'Object Repository/test/test_object' located by 'By.xpath: //span[text()="blablabla"][1]' in '5' second
As you see it finds 3 elements, how can I select only one from these 3 elements?
Then I can use each element to verify different asserts, that’s the end goal.