What are the beneficial methods for calling people to Allah in calling relatives and acquaintances?

The questioner : In the name of Allah, the Most Gracious, the Most Merciful.
Calling people to the path of Allah, O Shaykh, is one of the most important matters, especially.

The Shaykh : Calling people to Allah or to the path of Allah.

The questioner : Yes, especially if a person is the imam of a mosque or has some knowledge. As you know, in new neighborhoods or on the outskirts of cities or in villages, one finds that some people do not come to the mosque. Some of them are deficient in the sunnah, some are deficient in the prayer, and some are deficient in many matters of the religion. So how should one deal with these people? For example, if a person is invited to a house, he finds that the father comes to the mosque but his older sons do not come, or relatives whom one must meet on occasions and in maintaining family ties, and some of their sons do not come to the mosque. So how should it be? I mean, should one use rebuke and severity, or should one be patient, or what is the way to that? May Allah guide you, O Shaykh.

The Shaykh : Allah the Mighty and Majestic said: addressing the Prophet (peace and blessings be upon him). Kinship is divided into two categories: a category for which you have direct authority over them, such as your children and your family, by the saying of the Prophet (peace and blessings be upon him): And another category of kinship is separate from you, and you are not directly responsible for them. As for the first, your responsibility toward them is greater than toward the second, and the second has a greater responsibility toward you than strangers who have no kinship with you. Neighbors have a greater claim than those who are not neighbors. So you must fulfill the right of every person, and your calling should be with wisdom, good admonition, and argument in the best manner. You should use force if it is more beneficial, and gentleness if it is more beneficial. It is known, for example, that a person’s calling of his family, over whom he has direct authority, is not like his calling of strangers. With the former, severity may be used, as the Prophet (peace and blessings be upon him) said: But with the latter, severity is not used; use gentleness and softness. How many a soft word has drawn one who was far from the truth. The sensible person uses what he sees as best, for there is no single standard that applies equally to all people.