Matthew Poole and continuators on Acts 22:16

16 And now why tarriest thou? arise, and be baptized, and wash away thy sin[illegible: 1 letter], calling on the Name of the Lord.

As washing causeth the spots to disappear, and to be as if they had not been, Isaiah 1.18. so does pardoning mercy, or remission of sins, which accompanieth Baptism, as in the due receiver, Mat. 3.11. 1 Pet. 3.21, 22. Where true Faith is, together with the profession of it by Baptism, there is salvation promised, Mark 16.16. In the mean while it is not the Water (for that only signifies), but it is the Blood of Christ which is thereby signified, that cleanseth us from our sins; as 1 Iohn 1.7. Yet Sacraments are not empty and deceitful signs; but God accompanieth his own Ordinances with his power from on high, and makes them effectual for those great things for which he instituted and appointed them.

Christ, to whom by Baptism he was to be dedicated.