AGnEx 130.31 :ܐܡܚܐ ܠܡܨܪ̈ܝܐ ܒܟܘܠ ܬܕܡܪ̈ܬܐ ܕܐܥܒܕ ܒܝܢܬܗܘܢ܂ ܘܟܢ ܢܫܕܪܟܘܢ‏ : I shall smite the Egyptians with all the wonders I shall do among them, and so then he will release you
See the entire entry for kén adv. thus, so