Acts of the Apostles, Chapter 1, verses 12-17, 21-26
12 They accordingly return, and giving themselves to prayer choose Matthias apostle in the place of Judas1
1:18 No man hath seen God - With bodily eyes: yet believers see him with the eye of faith. Who is in the bosom of the Father - The expression denotes the highest unity, and the most intimate knowledge.
1:19 The Jews - Probably the great council sent.
1:20 I am not the Christ - For many supposed he was.
1:21 Art thou Elijah? - He was not that Elijah (the Tishbite) of whom they spoke. Art thou the prophet - Of whom Moses speaks, Deu 18:15.
1:23 He said - I am that forerunner of Christ of whom Isaiah speaks.I am the voice - As if he had said, Far from being Christ, or even Elijah, I am nothing but a voice: a sound that so soon as it has expressed the thought of which it is the sign, dies into air, and is known no more. Isa 40:3.
1:24 They who were sent were of the Pharisees - Who were peculiarly tenacious of old customs, and jealous of any innovation (except those brought in by their own scribes) unless the innovator had unquestionable proofs of Divine authority.
1:25 They asked him, Why baptizest thou then? - Without any commission from the sanhedrim? And not only heathens (who were always baptized before they were admitted to circumcision) but Jews also?
1:26 John answered, I baptize - To prepare for the Messiah; and indeed to show that Jews, as well as Gentiles, must be proselytes to Christ, and that these as well as those stand in need of being washed from their sins.
1:28 Where John was baptizing - That is, used to baptize.

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1:12 A Sabbath - day's journey - The Jews generally fix this to two thousand cubits, which is not a mile.
1:13 They went up into the upper room - The upper rooms, so frequently mentioned in Scripture, were chambers in the highest part of the house, set apart by the Jews for private prayer.These, on account of their being so retired and convenient, the apostles now used for all the offices of religion. Mat 10:2; Mar 3:14; Luk 6:13.
1:14 His brethren - His near kinsmen, who for some time did not believe; it seems not till near his death.
1:15 The number of persons together - Who were together in the upper room. were a hundred and twenty - But he had undoubtedly many more in other places; of whom more than five hundred saw him at once after his resurrection, Co1 15:6.
1:16 Psa 41:9.