Entire households believe the Gospel for salvation
Acts 10:2 (ASV)
2a devout man, and one that feared God with all his house, who gave much alms to the people, and prayed to God always.
Acts 11:14 (ASV)
14who shall speak unto thee words, whereby thou shalt be saved, thou and all thy house.
Acts 16:14–15 (ASV)
14And a certain woman named Lydia, a seller of purple of the city of Thyatira, one that worshipped God, heard us: whose heart the Lord opened to give heed unto the things which were spoken by Paul. 15And when she was baptized, and her household, she besought us, saying, If ye have judged me to be faithful to the Lord, come into my house, and abide there. And she constrained us.
Acts 16:30–34 (ASV)
30and brought them out and said, Sirs, what must I do to be saved? 31And they said, Believe on the Lord Jesus, and thou shalt be saved, thou and thy house. 32And they spake the word of the Lord unto him, with all that were in his house. 33And he took them the same hour of the night, and washed their stripes; and was baptized, he and all his, immediately. 34And he brought them up into his house, and set food before them, and rejoiced greatly, with all his house, having believed in God.
Acts 18:8 (ASV)
8And Crispus, the ruler of the synagogue, believed in the Lord with all his house; and many of the Corinthians hearing believed, and were baptized.
1 Corinthians 1:16 (ASV)
16And I baptized also the household of Stephanas: besides, I know not whether I baptized any other.