TDN.52:4 :ܗܘ݁ ܕܒܨܠܝ݂ܒܐ ܒܝܬܝ݂ܬ ܠܢ ܠܐܒܘܟ‏ : the one who made us family to your father through your cross
See the entire entry for byty vb. Q to make familiar