Only the unrepentant are unwelcome at the Lord’s Table. Those who will not believe in and submit to Jesus do not have any part of Him. Those who profess faith but undo their profession by ongoing rebellion to His commands are disciplined away from the fellowship of this meal. But every other believer is invited. More than that, every believer is being changed by it. Take, for example, those believers that Paul categorizes in 1 Thessalonians 5:14.
Christian, are you idle? Consider the humble and exhausting service of Your Lord. He labored in life up to and through death for you, and even now prays for You. Think of the work that went into this meal and get off your rear.
Christian, are you faint-hearted? Consider the resurrection of Your Lord. He died and was buried, but He rose again on the third day just as He promised so that you would have life (1 Thessalonians 5:10). His will cannot be stopped, and no one can stop Him from loving You. Think of the faithfulness and courage that this meal represents and don’t shrink back.
Christian, are you weak? Consider the nature of Your Lord. He does not break the bruised reed or quench the smoldering wick. He partook of the same things as you, He was tempted in all ways as you are, and so He sympathizes with your weaknesses (Hebrews 2:14; 4:15). Think of His tenderness, His gentleness, His kindness to you even in this meal. You are not solo in your need.
Whatever the problem, Jesus does not leave us where we are. He knows who needs to grow and what is lacking in their faith. He is patient, just as He calls us to be patient with one another. But He is always working toward His will that we all be completely sanctified even when we eat the bread and drink the cup of communion. No believer will be left behind.
After midnight one Christmas Eve, when all the family had been in bed for a couple hours, the youngest of two teenage brothers couldn’t sleep. He tiptoed out of his room, down the stairs, and pulled up an arm chair next to the star-topped tree. Instead of getting sleepy, he became more awake as he grew tired of waiting for everyone else to wake up. So he did what anyone in his situation might do; he decided to open some presents. But, instead of opening the ones with his name, he opened the ones tagged for his older brother.
The first package contained a video game. He fired up the console and played at the station for over an hour. The game was great fun and, when he was done, he re-taped the paper and put the present back under the tree. Still no sounds were heard from the bedrooms upstairs so he took a second. It was a Seahawks jersey, two years too big for him. But he put it on anyway and pantomimed as Russell, as Richard, even as the Beast. After routing every imaginary opponent he rewrapped the shirt with care in hopes that his brother would never be aware.
Finally he grabbed the only other present left for his brother. It was a model rocket kit that his older brother had been coveting for a while. Having by this point lost his conscience, the younger brother took it outside, lit the fuse, and watched the rocket launch right into the side of the house. The crash woke the family and they found him in his pajamas busily gathering up the broken pieces.
The younger brother had taken what was meant for someone else and used it for his temporary pleasure. At best he hoped to deceive his brother. With the last gift, he did irreparable damage.
According to 1 Thessalonians 4:3-8 Christian brothers ought also to think about proprietary gifts when it comes to sexual purity and relationships. Too many young men transgress and defraud their brothers by taking what isn’t meant for them, not only in terms of private parts but also regarding intimate affections. God prepares gifts and He avenges those who disregard His warning not to mess with gifts meant for others. People are not property, but there are owners. God’s will is that sanctified men refuse to take what isn’t theirs or tread where their don’t belong.