Get block cms for fontend in magento 2

First you create new block cms, this you need care is  "Identifier"

Why i want you care, because you will use for code after.
Look : setBlockId('id_block')

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<?php echo $call_block = $this->getLayout()->createBlock('cms/block')->setBlockId('id_block')->toHtml(); ?>

It very simple !!

if you have any question related, you can comment behind. Thanks