How pleasant are the poet's words when he says: 'Great peace have they that love Thy law; and there is no stumbling for them' – meaning to say: If there will be peace for the master and students and he presents a kindly countenance to them as is fitting – a smiling countenance. Firstly.
And further, for he said: 'they that love Thy law' – to imply another interpretation, RASHI's, of blessed memory, that is: that the pupils also love Thy law, and deal with from love, in there being no 'stumbling for them', G-d forbid, by their erring in teaching. And I have heard that one of the sages interpreted this according to: ' And all thy children shall be taught of the LORD; and great shall be the peace of thy children' – meaning to say: 'All thy children shall be taught of the LORD' that they become wise as they should, by 'great [rav] shall be the peace of thy children' – meaning to say: The rav [rabbi] shall be at peace with the children, that is: present a kindly countenance to them. His words so far.
'And this was the work of the candlestick, beaten work of gold; unto the base thereof, and unto the flowers thereof, it was beaten work; according unto the pattern which the LORD had shown Moses.' – Note that the matter [the Hebrew, in 'according to the pattern'] resembles reflecting mirrors, whereby when a person approaches a mirror to see his shape in it, when he laughs, the shape in the mirror laughs, and if he distorts – the shape also distorts.
This is what our holy Torah implied: "And this is the work of the candlestick' – this means the Torah, which is as he writes: 'and Torah is light'. If it is 'beaten', meaning: his study is difficult for him, one must know whether it is he does not give it its due, or because his master does not present him with a kindly countenance. For this reason did he conclude with 'according to the pattern' – that is: This matter is like a mirror in which a person sees his face, that when he laughs it laughs, and when he distorts it distorts. This is the case for this matter as well.