1:1 "The Lord stirred up the spirit of Cyrus". The Angel  acted directly on his heart (or on his guardian Angel?).

It is significant that Ezra and Nehemiah speak of the "God of Heaven" (e.g. Ezra 1:2) whilst Zechariah speaks of the "God of the earth" or 'land' of Israel, perhaps because the Angel of Israel literally went to Heaven when the glory departed from Jerusalem, and returned, in a sense, at the restoration- to depart again  at Christ's death ("Your house is left unto you desolate"; of the Angel that once dwelt in the temple).

1:8 Sheshbazzar - see on Jer. 23:5

4:24- see on Zech. 3:1

5:1- see on Hag. 1:2

5:5 "The eye of their God (the Angel) was upon the elders of the Jews, that they could not cause them to cease" (building).

They separated / purged, and then, within a few years, we read of them doing so again. Initially, the exiles separated from the peoples of the land (Ezra 6:21); by 9:1 they are in need of separating again; and by 10:11 likewise; then they separate (10:16), only to need another call to separation by the time of Neh. 9:2; 13:3. They obviously found it extremely difficult to be separated from the surrounding world unto God’s law (Neh. 10:28).

6: 22 "The Lord had made them (Israel) joyful, and turned the heart of the king of Assyria unto them, to strengthen their hands in the work of the house of God, the God of Israel" (the God of Jacob- an Angelic term for the Angel that stands for Israel). Note the emphasis on the Angel directly working on human hearts.

7:10 Was Ezra motivated by Mal. 4:4? There was to be an appeal made to the returned captives to keep the Law, lest their new kingdom come to final ruin.
7:16 Did Ezra’s journey to Jerusalem inspire Paul to do the same (Acts 24:17)?
7:28 Strengthened-A major theme in Ezra (e.g. 6:22) and Nehemiah. Messiah was the one whose hand was strengthened by God (Is. 42:6). The restoration prophecies of Isaiah spoke of the hands of the weak amongst God’s people being strengthened (Is. 35:3; 51:18), and here we have their fulfilment, at least potentially (see on Neh. 3:4). But that strengthening of hand had to be prayed for, as Nehemiah did specifically (Neh. 6:9). God strengthened the hands of Israel when they left Egypt (Jer. 31:32 Heb., AV “took them by the hand”), and He was willing to do so again for His people as they left Babylon in what was intended to be their second Exodus. Zech. 8:9, in the same restoration context, appeals to the captives to “let your hands be strengthened, you that hear in these days the words of the prophets, which were in the days when the foundation of the house of the Lord of hosts was laid, that the temple might be built”. Clearly there had to be a willingness to allow the strengthening process to operate, and the suggestion is that it occurred through the inspired words of God which Ezra taught. Hence the urgent appeal: “Let your hands be strengthened” (Zech. 8:13). This is not to say that there is no element of God working over and above our freewill effort- the whole idiom of “the hand of God” working upon people in Ezra and Nehemiah’s time clearly demonstrates this. God strengthened the hands of the king of Babylon to do His will in Ez. 30:25; He strengthened the hands of Judah’s Arab enemies so that they would destroy each other (Zech. 14:13). And Ezra 6:22 has recorded how God made Judah joyful, and turned the heart of the king of Assyria unto them (as in Prov. 21:1).