EphFid 67:23.1 :ܫܘܒܚܐ ܠܐܒܐ ܕܟܣܐ ܒܐܝܬܝܗ‏ : praise to the Father who is hidden in His eternal essence
See the entire entry for ˀīṯē, ˀīṯyā n.m. essence