Then he said to Jesus, “Lord, remember me when You come into Your kingdom.”
And Jesus said to him, “Assuredly, I say to you, today you will be with Me in Paradise.”
Luke 23:42-43 NKJV
Wow! What did this man understand about who Jesus is? He called Him “Lord”. It was the same as calling Him “Master”.
He only had one request, to be remembered. He understood that there was no way he was worthy to go to Heaven, yet Jesus, by grace, tells him that he will be with Him in Paradise!
Do you realize that there is nothing you can do to earn Heaven? Have you asked Him to save you? The theif understood he offended God and did not deserve Heaven, but Jesus gave Him grace!
If you have received His grace, be thankful and show it.