How do I get others to see the necessity of attending?

Answer:

Sadly, your observation is correct. Despite clear commands to assemble and be a part of a church, many people only attend what they feel is the absolute minimum necessary. These are the people who are most likely to fall away into sin because they lack the encouragement of fellow Christians. See: Does the command to "forsake not the assembling of ourselves together" apply only to Sunday worship?

Skipping services is a symptom of deeper problems. Without addressing the cause, the symptom will only get worse. It is a guess, but I suspect that most aren't getting much out of the worship services. Even though they are mostly family, they don't look forward to seeing each other. Addressing the problem would require changing attitudes, and I suspect that won't happen easily because the leadership you have in the preacher is lacking because of his own health problems.

However, the anger is something we can address. You are trying to make people do what is right. I understand the desire. I face it all the time, too. You know what needs to be done, but others resist the obvious. But when you try to force people, the result is anger in yourself and others. Think about this: If you pushed your brother, what would happen? Unless caught off guard, he will shift his weight and dig in, so he won't move. It is a natural and automatic response. People do the same thing with arguments. The more heated the debate, the less anyone involved moves.

Therefore, you need to shift your expectations. First, you set the best example that you can. "Let no one despise your youth, but be an example to the believers in word, in conduct, in love, in spirit, in faith, in purity" (I Timothy 4:12). Second, become another Barnabas (a son of encouragement). Tell people how much you enjoy seeing them and being with them. As best you can, make your lessons interesting so that people will want to come and learn more.

Do you remember the story of the prodigal son? When the younger son insisted on leaving, the father did not chase after the son. Having a free will, each person has the freedom to make their own mistakes. You can teach people the right way to live, you can encourage them to make good choices, you may even scold when they make bad ones, but never forget that ultimately it is their choice. In the case of the prodigal son, he chose to return and what drew him back were the memories of father's household.

Thus, you can't make people want to be with their brothers and sisters in Christ, but you can show an example of eagerness to serve and help foster an environment where people can look forward to coming to services. For example, you can tell your grandmother "I know it is hard to get out and get us to services, but I'm glad you've made an effort for us, and I hope it has been for yourself as well."