Of you the builders (huph' humōn tōn oikodomōn). The experts, the architects, had rejected Jesus for their building (Psa 118:22) as Jesus himself had pointed out (Mat 21:42; Luk 21:17). This very Rejected Stone God had made the head of the corner (either the highest corner stone right under the roof or the corner stone under the building, Isa 28:16) as Jesus showed, as Peter here declares and repeats later (1Pe 2:6.).