Call it “internal grammar.” Describe it as consistent, or use an expression such as turn about is fair play, or what goes around comes around.
Paul told the Corinthians that if they didn’t accept his instructions as coming from the Lord then the Lord would not accept them when they came before Him. “If anyone does not recognize this, he is not recognized” (1 Corinthians 14:38, ESV) “If anyone ignores this, they themselves will be ignored” (NIV). If you won’t know, then you won’t be known.
The argument is logically equivalent when both sides of the statement are turned to affirmations. If a man receives the things of the Lord, then the Lord receives the man. And by application, if we receive the bread and the cup at His Table the way He instructs us to, then He will receive us at His table the way the bread and the cup invite us to realize.
This will be true for us at the Supper of the Lamb. We come to commune with Christ week by week. We receive His Word and His salvation by faith, so we eat and drink in remembrance of Him. And at that great Table, He will say, “I know you. Haven’t you been here before? Welcome, you who are blessed by my Father, inherit the kingdom prepared for you from the foundation of the world” (Matthew 25:34).