for to be seen = to be gazed upon as a spectacle. Same word as "see" in Mat_22:11.
for = for the purpose. Greek. pros.App-104.
phylacteries. Greek. phulakterion. Occ only here. See notes, &c, on Exo_13:9. Deu_6:8. Reference to Pentateuch App-92and App-117.
the borders = the fringes. Reference to Pentateuch (Num_15:37-41. Deu_22:12). Originally a mark of separation between Israel and the surrounding nations. Compare Luk_8:44.