So homeless people with no access to a shower or bath shouldn't worship the Lord?
In our experience, those who want to come to Christ as a worshipper of Jehovah put in the effort to bring themselves into a proper state to worship him. By a proper state, I mean to be as clean and presentable as their circumstances allow. Its about respect.
I will give you a first hand example of my own experience....
A man and his wife were hopelessly addicted to alcohol and tobacco, and all their money went to support their addictions. There was little left for food. They wore clothing that was dirty and stank of urine and their hair was seldom ever washed. Their accommodation was ramshackle, but it was a roof over their heads and all they could afford. When we called on them in our ministry, they showed interest in the Bible's message, but their addictions were too strong for them to make any changes in their lives. We continued to call and encourage them....but then the wife went into acute liver failure and died at the age of just 36.
The husband was devastated but had to admit that alcohol had taken his wife away from him. We helped him with the funeral which was conducted at a local Catholic church (his wife was Catholic) and catered to family members who attended the wake at his home. (which we cleaned) But grief was taking away his will to live.
I saw an article in a Watchtower magazine and went to his house to give it to him and to encourage him to read this one article on the wonderful future promised for mankind in a restored paradise on earth. He promised that he would read it. The next time I called he greeted me with a big smile and said that he read the article and that he felt like 'a penny dropped'.....from that day he decided to study the Bible, clean up his life, and with God's help he conquered his addictions and became a clean worshipper of Jehovah. He still is to this day.
People don't need a "hand out" because that simply makes them dependent and perpetuates their 'victimhood'....they need a "hand up" to become the useful human beings that God knows they can be. You don't need to be rich to dress in clean clothes.....thrift stores can provide clothing at low cost. And water to wash oneself is not out of reach, nor is a bar of soap....where there's a will, there's a way. Sometimes the will is all they need.....
Homeless people often lose the will, because society throws them away....God never does.