In order to express a letter of the Hebrew alphabet we need to spell it out or add additional syllables. In our times, we can only perceive a limited manifestation of G-d’s holiness, but in the time of Moshiach we will be able to perceive G-d himself. In our times, we merely know that the challas (Shabbos bread) are holy but in the time of Moshiach we will understand the kedusha (holiness). In the time of Moshiach we will perceive the glory of G-d in every aspect of the world. In the time of Moshiach we will understand the full name of G-d.