Acts 2:39-41

For the promise [of the Holy Spirit] is for you and your children and for all who are far away [including the Gentiles], as many as the Lord our God calls to Himself.” [Is 57:19; Joel 2:32] And Peter solemnly testified and continued to admonish and urge them with many more words, saying, “Be saved from this crooked and unjust generation!” So then, those who accepted his message were baptized; and on that day about 3,000 souls were added [to the body of believers].