Act 2:38-41, Acts 5:42, Mt 28:18-20, Mk 16:15, Acts 1:8

In the Old Testament, King Josiah read the book of the covenant found in the temple and made all the people of Israel hear it. (2 Chronicles 34:29-32)

2 Chronicles 34:29 Then the king sent and gathered together all the elders of Judah and Jerusalem. 30 And the king went up into the house of the Lord, and all the men of Judah, and the inhabitants of Jerusalem, and the priests, and the Levites, and all the people, great and small: and he read in their ears all the words of the book of the covenant that was found in the house of the Lord. 31 And the king stood in his place, and made a covenant before the Lord, to walk after the Lord, and to keep his commandments, and his testimonies, and his statutes, with all his heart, and with all his soul, to perform the words of the covenant which are written in this book. 32 And he caused all that were present in Jerusalem and Benjamin to stand to it. And the inhabitants of Jerusalem did according to the covenant of God, the God of their fathers.

The resurrected Jesus commanded his disciples to let everyone hear that Jesus is the Christ. (Mt 28:18-20, Mark 16:15, Acts 1:8)

Mt 28:18 And Jesus came and spake unto them, saying, All power is given unto me in heaven and in earth. 19 Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost: 20 Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you always, even unto the end of the world. Amen.

Mark 16:15 And he said unto them, Go ye into all the world, and preach the gospel to every creature.

Acts 1:8 But ye shall receive power, after that the Holy Ghost is come upon you: and ye shall be witnesses unto me both in Jerusalem, and in all Judaea, and in Samaria, and unto the uttermost part of the earth.

Peter told the Israelites and Gentiles to believe in Jesus as the Christ and be baptized. On that day, 3,000 people believed in Jesus as the Christ and were baptized. (Acts 2:38-41)

Acts 2:38 Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost. 39 For the promise is unto you, and to your children, and to all that are afar off, even as many as the Lord our God shall call. 40 And with many other words did he testify and exhort, saying, Save yourselves from this untoward generation. 41 Then they that gladly received his word were baptized: and the same day there were added unto them about three thousand souls.

The early church members did not stop teaching and preaching that Jesus is the Christ, whether in the temple or at home every day. (Acts 5:42)

Acts 5:42 And daily in the temple, and in every house, they ceased not to teach and preach Jesus Christ.