It is the day on which the Holy Spirit descended from heaven, inaugurating the full character of Christianity. The two great characteristic truths of Christianity are redemption and the presence of the Holy Spirit on earth, while Christ holds His session at the right hand of God. The first day of the week is the witness of these two things. For the proof of the latter, see Leviticus 23:1516. “And ye shall count unto you from the morrow after the sabbath, from the day that ye brought the sheaf of the wave offering; seven sabbaths shall be complete: even unto the morrow after the seventh sabbath shall ye number fifty days; and ye shall offer a new meat offering unto the Lord.” This was the feast of Pentecost, and it began on “the morrow after the sabbath,” that is, on the first day of the week. Acts 2 shows that this was the day on which the Holy Spirit descended.