Fear thou not. Reference to Pentateuch (Deuteronomy 31:6; Deuteronomy 31:8).
be not dismayed. look not around. Some codices, with Syriac, read "and be not", &c. It is this that dismays (see notes on Psalms 73 and 77).
God. Hebrew. Elohim. App-4.
strengthen. strength (inherent, for activity). Hebrew. 'dmas. Not the same word as in Isaiah 41:1 and Isaiah 41:21.