16 And now why tarriest thou? arise, and be baptized, and wash away thy sins, calling on the name of the Lord.

... there is a precise and definite point of time at which a sinner's disposition and faith are granted to him for a change of mind or heart, and for remission; and this is in the act of obedience. Ananias said to Saul "Arise, be baptized and wash away thy sins, attaching thyself* to the name of the Lord" (Acts xxii. 16). In the act of doing this, in rising from the water, Saul's state of heart was granted to him for repentance, and his belief of the truth was counted to him for remission of sins -- both in the act which effected his attachment to the name.

[* epikalesamenos, calling upon, invoking the name; and hence attaching oneself to the name].

Eureka - The Name