Note 1 at Ac 10:44: These Gentiles didn't go through any rituals or repeat any doctrinal statements, and they hadn't been baptized yet, as some people teach as a requirement for salvation (see note 9 at Mr 16:16); yet God gave them the Holy Ghost. Lost people cannot receive the Holy Ghost (see note 27 at Joh 14:17). Therefore, we see that the Lord granted salvation solely on the basis of the faith in their hearts.

Note 2 at Ac 10:44: In this instance, these Gentiles received the baptism of the Holy Ghost simultaneously with the new birth. In other cases, the Spirit baptism came later (see note 3 at Ac 8:16). God, who knows the hearts of everyone (Ac 1:24), must have seen that these men were ready for everything the Lord had for them, so He gave it to them all at once. The Lord is no respecter of persons (Ro 2:11), and He will do the same for believers today.