3:20 And he shall send Jesus Christ. Again we have to turn to the Revised Version for the meaning: And that he may send the Christ who hath been appointed for you, [even] Jesus. The great hope of the Jews was the Messiah. He had come, been rejected, and had returned to heaven. His return will be prepared for by repentance, and turning to the Lord. The blotting out of sins, the seasons of refreshing, and the return of Christ are all, in some measure, dependent on their repentance and turning. The Christ appointed is even Jesus, the crucified One.
3:20 And he may send - The apostles generally speak of our Lord's second coming, as being just at hand. Who was before appointed - Before the foundation of the world.
3:19-21 The absolute necessity of repentance is to be solemnly charged upon the consciences of all who desire that their sins may be blotted out, and that they may share in the refreshment which nothing but a sense of Christ's pardoning love can afford. Blessed are those who have felt this. It was not needful for the Holy Spirit to make known the times and seasons of these dispensations. These subjects are still left obscure. But when sinners are convinced of their sins, they will cry to the Lord for pardon; and to the penitent, converted, and believing, times of refreshment will come from the presence of the Lord. In a state of trial and probation, the glorified Redeemer will be out of sight, because we must live by faith in him.
