In honor of Rosh Chodesh Sivan in the coming week, I offer you some words from The Lubavitcher Rebbe:

Today is Erev Rosh Chodesh Sivan, the third month, the month in which the Torah was given... Rosh Chodesh Sivan... is distinguished, not only as Rosh Chodesh, but as the day on which the Jews "In the third month... the same day they came (into) the wilderness of Sinai... and there Israel encamped before the mountain" (Shemos 19:1-2). Rashi comments that on that day, (Rosh Chodesh Sivan) all Jews were united "as one man with one heart" in anticipation of receiving the Torah.
We must learn a lesson from everything we encounter. Furthermore, that lesson must apply to deed, for as our Sages declared, "Deed is most essential." The lesson which we can derive from the encampment of the Jews "as one man with one heart" is to carry out in actual deed, the directives of the previous Rebbeim: the Baal Shem Tov, the Maggid (of Mezeritch), the Alter Rebbe and their successors, in regard to Ahavas Yisrael (the love for one's fellow Jew). The verse "Love your fellow as yourself" (Vayikra 19:18) should be interpreted in a simple manner. We must show the same unlimited and unrestrained love that we have for ourselves to others. This love must be extended to every Jew, even one in a far away corner of the world, even one whom we have never seen. Even if all we know about an individual is that he is Jewish, we must realize that he is "our fellow," and that we are obligated to love him "as ourselves." Furthermore, we must express this love in actual deed, helping each Jew and seeing to his welfare in both spiritual and physical matters.
Since "Deed is most essential," thus, in addition to the good resolutions each of us will take upon himself in regard to Ahavas Yisrael, we must realize that the resolutions alone (though they are very important) will not suffice, and we must carry them out in action e.g. by receiving every Jew "with a cheerful countenance" (Pirkei Avos 1:15), speaking to him congenially, in a manner that is based on love and lets him feel that love. Also, we must do deeds that benefit each Jew.
Each year, all the elements of the first Rosh Chodesh Sivan, repeat themselves. This is particularly true when we recall those events. Then, as the AriZal commented on the verse "these days are remembered and carried out," through remembering them in the proper manner (which involves, as the Previous Rebbe explains, reliving the events) then, the same elements that were involved in the initial event are carried out and revealed...
There is a second aspect connected with this day, - the day the Jews entered the Sinai desert and prepared to receive the Torah. When G-d gave the Torah, He asked for guarantors and accepted the Jewish children, as our Sages (Shir HaShirim Rabbah 1:4) commented, "Our children are our guarantors." Hence, now is a proper time and place for educators, and most importantly fathers and mothers, to take upon themselves good resolutions; to use the time between now and Shavuos, - the season of the giving of our Torah, - to speak to children, both boys and girls, about the importance of Erev Rosh Chodesh Sivan, Rosh Chodesh Sivan, the days of preparation for the giving of the Torah, the holiday of Shavuos itself, and its days of compensation - which last through the twelfth of Sivan. In general, they should speak to the children about the giving of the Torah, explaining to them what Torah is, that it is the Torah of Life, the Torah of Kindness, and the Torah of Truth. The children must be explained that they were the guarantors, in whose merit, the Torah was given initially after the Jews left Egypt. Likewise, it is their merit which causes the Torah to be given each year, - in the season of the giving of our Torah, - and also each day, as our Sages commented, "Each day (the words of Torah) should be new in your eyes."
 "And He will return the hearts of the fathers through the children": The children, both boys and girls, will not wait for their parents and educators to speak to them about the above matters. Rather - as in the Exodus from Egypt when the children recognized Him first. Similarly, in regard to the giving of the Torah which comes in conjunction with the Exodus - as G-d promised Moshe "When you take the people out of Egypt, you will serve G-d on this mountain."  The children are "first;" - they will go immediately to their educators and parents and demand that they be told more about the Torah, how they should prepare to receive the Torah, and in what manner they should afterwards receive it...
Since the Torah was given by G-d, Himself, to every Jew and to every Jewish child, whether boy or girl, we can be sure that the children will ask, and prevail, that beginning from Erev Rosh Chodesh Sivan, every father and mother, grandfather and grandmother, will study with them; and thus, add to their knowledge of Torah and Yiddishkeit.
The Jewish children must also ask their parents to go with them together to the synagogue on Shavuos... Thus, the festival of Shavuos as it is celebrated in the synagogue will unite the hearts of all the parents and children and unite them with our entire People throughout the world. Then, all will feel that now, and forever, and everywhere, that Jews are One Nation, united with the One Torah which was given by the One G-d.
May it be G-d's will, that we shall accept all the good resolutions now, (on the afternoon of Erev Rosh Chodesh Sivan,) including the resolution to give Tzedakah. It is fitting to increase one's gifts to Tzedakah today just as we have increased the requests in our prayers and recital of Tehillim; and also to increase our study of Torah. The increase of each and every Jew in these matters is based on Ahavas Yisrael, "You shall love your fellow as yourself." Ahavas Yisrael is "one with love of G-d" - "You shall love the L-rd, your G-d;" that, in turn, includes within it all the positive commandments, among them the command "Fear the L-rd, your G-d" which includes within it all the negative commandments. Thus, all the Mitzvos, even the Mitzvah of studying Torah (and the aspect of Torah study that brings about deed), are included [in the Mitzvah of Ahavas Yisrael].
Then, our actions and our service, even now in the days of darkness of the present Galus - a darkness which is only in the street - for, "All the children of Israel had light in their dwellings," and will have light in their dwellings, a light which will be revealed in abundant blessings regarding children, health, and prosperity; - will hasten the coming of the true and complete redemption led by Mashiach.
This is particularly true, since, the third month, the month in which "they came into the wilderness of Sinai... and Israel camped before the mountain," has already begun. When they camped before Mt. Sinai, our Sages (Tanchuma, Yisro 8) relate, all those who had physical ailments were healed. Hence, they were also healed from all their spiritual ailments, (for the physical state results from the spiritual.) Therefore, all the Jews "as one man with one heart" camped before Mt. Sinai, and then all Jews declared "We will do and we will listen," - "we will do" first. In response, all the Jews were given two crowns (a symbol of royalty) one for "We will do" and one for "We will listen" [and all the Jews received the Torah].
From the above, we can derive the lesson that each Jew must feel that not only is he a King's son, as the Talmud (Shabbos 67a) says, but a king himself (as explained in Tikunei Zohar). And therefore, he must act as a king in all matters connected with Yiddishkeit - walking upright and proud, even during the Galus.
This, in turn, will bring about the revelation of the era when "Kingship will be the L-rd's." "G-d will be King over the entire earth; on that day, G-d will be One and His Name One. And this will draw down all of G-d's blessings in both material and spiritual matters, and material and spiritual fused together. This also includes the acceptance of all good resolutions, among them the resolutions mentioned above. And this will bring about the essential and true good - the good for which we all hope - the coming of Mashiach, with the true and complete redemption, speedily in our days.

Amen!
Wishing One and All a Shabbat Shalom, and a Chodesh Sivan Tov!