When he was full forty years old - This was a general tradition among the Jews: "Moses was forty years in Pharaoh's court, forty years in Midian, and forty years he served Israel."

To visit his brethren - Probably on the ground of trying to deliver them from their oppressive bondage. This desire seems to have been early infused into his mind by the Spirit of God; and the effect of this desire to deliver his oppressed countrymen was his refusing to be called the son of Pharaoh's daughter - see Hebrews 11:24, and thus renouncing all right to the Egyptian crown, choosing rather to endure addiction with the people of God than enjoy the pleasures of sin for a season.

when.

Exodus 2:11,12 And it came to pass in those days, when Moses was grown, that he went out to his brothers, and looked on their burdens...

Hebrews 11:24-26 By faith Moses, when he was come to years, refused to be called the son of Pharaoh's daughter...

it came.

Exodus 35:21,29 And they came, every one whose heart stirred him up, and every one whom his spirit made willing...

1 Chronicles 29:17-19 I know also, my God, that you try the heart, and have pleasure in uprightness. As for me...

2 Chronicles 30:12 Also in Judah the hand of God was to give them one heart to do the commandment of the king and of the princes, by the word of the LORD.

Ezra 1:1,5 Now in the first year of Cyrus king of Persia, that the word of the LORD by the mouth of Jeremiah might be fulfilled...

Ezra 7:27 Blessed be the LORD God of our fathers, which has put such a thing as this in the king's heart...

Proverbs 21:1 The king's heart is in the hand of the LORD, as the rivers of water: he turns it wherever he will.

2 Corinthians 8:16 But thanks be to God, which put the same earnest care into the heart of Titus for you.

Philippians 2:12,13 Why, my beloved, as you have always obeyed, not as in my presence only, but now much more in my absence...

James 1:17 Every good gift and every perfect gift is from above, and comes down from the Father of lights, with whom is no ficklenss...

Revelation 17:17 For God has put in their hearts to fulfill his will, and to agree, and give their kingdom to the beast...

to.

Acts 15:36 And some days after Paul said to Barnabas...

Exodus 4:18 And Moses went and returned to Jethro his father in law, and said to him, Let me go, I pray you...

The Prayer of Stephen.
(Fifth Sunday after Trinity, 1832.) TEXT: ACTS vii. 60. "And Stephen kneeled down and cried with, a loud voice, Lord, lay not this sin to their charge. And when he had said this, he fell asleep." FREE and unrestricted as we are in our church as to our choice of subjects for meditation from the treasuries of the divine Word, many of you may still perhaps wonder why I have selected this passage. For you are aware that I have often lately taken occasion to express the opinion that the state of things …
Friedrich Schleiermacher—Selected Sermons of Schleiermacher

Whether Christ's Birth Should have Been Manifested by Means of the Angels and the Star?
Objection 1: It would seem that Christ's birth should not have been manifested by means of the angels. For angels are spiritual substances, according to Ps. 103:4: "Who maketh His [Vulg.: 'makest Thy'] angels, spirits." But Christ's birth was in the flesh, and not in His spiritual substance. Therefore it should not have been manifested by means of angels. Objection 2: Further, the righteous are more akin to the angels than to any other, according to Ps. 33:8: "The angel of the Lord shall encamp round …
Saint Thomas Aquinas—Summa Theologica

Whether it is Fitting that Christ Should Sit at the Right Hand of God the Father?
Objection 1: It would seem unfitting that Christ should sit at the right hand of God the Father. For right and left are differences of bodily position. But nothing corporeal can be applied to God, since "God is a spirit," as we read in Jn. 4:24. Therefore it seems that Christ does not sit at the right hand of the Father. Objection 2: Further, if anyone sits at another's right hand, then the latter is seated on his left. Consequently, if Christ sits at the right hand of the Father, it follows that …
Saint Thomas Aquinas—Summa Theologica