he thought: i.e. pondered about or contemplated this step. This was Satan's assault, as he had assaulted Abraham before (Gen_12:11-13). See App-23.
these things. The two courses open to him in Mat_1:19.
the angel of the LORD. The first of three appearances to Joseph in these chapters, p. 1308 (Mat_1:20, Mat_1:24; Mat_2:13, Mat_2:19).
angel = messenger. The context must always show whether human or Divine.
the LORD = Jehovah. No Art. See App-98.
appeared. Greek. phaino. See App-105.
a dream. Greek. onar. Occurs only in Matt, (here; Mat_2:12, Mat_2:13, Mat_2:19, Mat_2:22; and Mat_27:19). Only six dreams mentioned in N.T. To Joseph (Mat_1:20; Mat_2:13, Mat_2:19, Mat_2:22); to the wise men (Mat_2:12); and to Pilate's wife (Mat_27:19).
fear not = Be not afraid. This shows bis condition of mind.
conceived = begotten. Greek. gennao, as in verses: Mat_1:2, Mat_1:16, Mat_1:18.