LSt.29:19 :ܠܐ ܬܪܡܐ ܕܚܠܬܐ ܕܡ݂ܢ ܡܠܟܐ ܡ݂ܢ ܠܒܟ܂ ܘܐܦܢ ܣܓܝ ܬܬܒܝܬܐ ܠܗ‏ : do not remove fear of the king from your heart, even should you become very friendly with him
See the entire entry for byty vb. Q to make familiar