In plain words
Let us praise the Father who faces south. Youthful, he shows the great Reality, Brahman, through an exposition that is silence. True disciples, sages settled in the auspicious state, gather round him, their foremost Guru. His hand makes the gesture of knowing; he is joy itself in form, delighting within himself, his face glad. Tamil explanatory prose: Let us praise Dakshinamurti, the supreme Father and Guru. Youthful, surrounded by sages established in Brahman, he reveals supreme reality through silence. His hand bears the gesture of knowledge; his face is joyful, and he delights in his own blissful nature.
Word for word
Let us praise that Father, the south-facing form: the youthful one revealing the great Reality, Brahman, through the exposition that is silence; the foremost Guru surrounded by true disciples, sages established in the auspicious state; whose hand bears the gesture of consciousness, whose form is joy, who delights in himself and whose countenance is joyful.