Even at a very young age the פריערדיקער רבי , ר‘ יוסף יצחק had a fixed daily schedule, and he very much enjoyed being מסודר . At eight o'clock in the morning, little יוסף יצחק jumped out of bed, and half an hour later he was in the shul davening with the מנין . From 9:30 until 10:00 was breakfast. Then, for four hours יוסף יצחק studied in ישיבה . Then came lunch for an hour and another hour devoted to writing. From 4:00 until 8:00 there was ישיבה again, then supper and some free time to spend in his room, before going to bed. Quite a schedule for a little boy of five!
שבת , of course, was different. Most of the morning was spent davening in Shul. In addition, he had a special treat, a visit to his grandmother, רביצין רבקה . There he would find the older members of the community, white-bearded חסידים who came to pay their respects to the "Grand Old Rebbetzin." They would stay for a while and tell stories about the lives of older חסידים or even of the Rebbe, יוסף יצחק 's grandfather, himself.
When everybody went home to eat the שבת meal, יוסף יצחק went back to the Shul. There all the people had long since finished their davening and gone home—except his father. He sat with his head near the ארון קודש . He was still davening. יוסף יצחק came close to his father quietly in order to listen to his תפילות . His father davened very slowly, as if he were counting the words. Sometimes he paused, and then would slowly continue.
יוסף יצחק wondered why it took his father so long to say the תפילות , which even he, a boy of five, knew so well and could read so fluently. But his heart pounded as he listened to the moving ניגון which his father hummed now and again, and the singsong of the words. Once, יוסף יצחק asked his uncle, ר‘ זלמן אהרן , his father's brother. "Why does Father daven so slowly?"
His uncle smiled as he answered with a twinkle in his eyes, "Your father finds it difficult to read the words from the סידור very quickly. He has to say each word separately, and can't daven very fast. That's why it takes him so long."
יוסף יצחק turned away without saying another word. But he felt a deep pain and a burning shame that his father couldn't daven more fluently.
The following שבת , יוסף יצחק silently approached his father and listened carefully. His father was saying the שמע . "שמע ישראל... " His father said slowly, then he paused. יוסף יצחק was startled to hear his father sobbing. His father said another couple of words, and sobbed again, and when he said "ה‘ אחד - ה‘ is One" the words seemed to burst from his heart, with a flood of tears.
יוסף יצחק couldn't listen any more. His heart was bursting with pity for his father. He went home, and with tears in his eyes, asked his mother, "Mother, Father is crying in the shul. Why does he daven so slowly, and why is he crying? Come, see for yourself. I can't bear it."
"There is nothing to be worried about," יוסף יצחק 's mother comforted her little son. "Go to your grandmother and tell her about it. She is a very wise lady, maybe she will be able to explain it to you."
יוסף יצחק didn’t waste any time and went to his grand-mother, certain that the wise, old רביצין would find a way to help his father learn to read the תפילות more quickly, perhaps even as quickly as all the other אידן in the Shul.
When he came to his grandmother, יוסף יצחק told her about his poor father's difficulty saying the תפילות . "Mother said that you could do something about it," he concluded hopefully.
Grandmother looked at him seriously and said, "Your father is a great חסיד and a צדיק . Before he reads any word from the סידור , he thinks about it carefully. What it means and to Whom he is saying it. And when he thinks about the holy words of the תפילות , his heart is filled with love for ה‘ . Just as a son loves his dear father who is near and yet far away, so your father longs to be closer to Him and the tears just come. I cannot tell you more now, but when you grow older you will understand this better, and you will know how it feels."
With his grandmother's explanation, יוסף יצחק felt as if a tremendous weight came off his heart. So it wasn't that his father couldn't read the תפילות quickly. It was because his father was such a great person that he davened differently. Yes, he realized that his father was different, in the way he spoke, the way he acted, the way he studied, the way he davened. That very day, יוסף יצחק resolved that as the only child of such a great person, he too must act differently, to merit being his child.
יוסף יצחק 's father, ר‘ שלום דובער , became the fifth Lubavitcher Rebbe. When he passed away, ר‘ יוסף יצחק became the sixth Rebbe.