{The disciple is not above his master} (ouk estin math(8874)(8873)
huper ton didaskalon). Literally, a learner (or pupil) is not
above the teacher. Precisely so in  Mt 10:24  where "slave" is
added with "lord." But here Luke adds: "But everyone when he is
perfected shall be as his master" (kat(8872)tismenos de p(8373) estai
h(9373) ho didaskalos autou). The state of completion, perfect
passive participle, is noted in kat(8872)tismenos. The word is
common for mending broken things or nets ( Mt 4:21 ) or men ( Ga
6:1 ). So it is a long process to get the pupil patched up to the
plane of his teacher.